#737BE4
Closest named color: Cornflower (#6A79F7). oklch(62.6% 0.156 277.6), rgb(115, 123, 228).
Aa
Black text reads best on this color (5.68:1).
About this color
#737BE4 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.156 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.032 away. Black text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #737BE4 |
| RGB | rgb(115, 123, 228) |
| HSL | hsl(236, 68%, 67%) |
| OKLCH | oklch(62.6% 0.156 277.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #737BE4 | 3.69:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #737BE4 | 5.68:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #737BE4 text on white | 3.69:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #737BE4 text on black | 5.68:1 | AA | Lc -37.3 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F6
oklch(88.5% 0.043 278.2)
-
Step 300
300
#B4BDF2
oklch(81% 0.076 277.1)
-
Step 400
400
#8E98EC
oklch(70.6% 0.123 277.6)
-
Step 500
500 (this color)
#737BE4
oklch(62.6% 0.156 277.6)
-
Step 600
600
#5F63D4
oklch(55.6% 0.17 277.8)
-
Step 700
700
#4E51B7
oklch(49% 0.158 277.6)
-
Step 800
800
#404394
oklch(42.6% 0.13 277.7)
-
Step 900
900
#363A76
oklch(37.8% 0.101 277.5)
-
Step 950
950
#1F2245
oklch(26.9% 0.064 277.4)
#737BE4 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4E8AE8 | 0.052 |
| Deuteranopia (no green cones) | #4381E2 | 0.053 |
| Tritanopia (no blue cones) | #4692A4 | 0.138 |
| Achromatopsia (no color) | #858585 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737BE4
#737BE4
oklch(62.6% 0.156 277.6)
- #9D8700
#9D8700
oklch(62.5% 0.129 97.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #737BE4, closest first.
No curated palette has a color within ΔE 0.04 of #737BE4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.032
- Soft Blue #6488EA ΔE 0.035
- Medium Slate Blue #7B68EE ΔE 0.050
- Medium Purple #9370DB ΔE 0.052
- Lavender Blue #8B88F8 ΔE 0.056
- Periwinkle #8E82FE ΔE 0.058
- Perrywinkle #8F8CE7 ΔE 0.062
- Dark Sky Blue #448EE4 ΔE 0.064
Use #737BE4 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.