#737DDE
Closest named color: Soft Blue (#6488EA). oklch(62.6% 0.145 276.9), rgb(115, 125, 222).
Aa
Black text reads best on this color (5.71:1).
About this color
#737DDE is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.145 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.033 away. Black text reads best on it, at 5.71:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #737DDE |
| RGB | rgb(115, 125, 222) |
| HSL | hsl(234, 62%, 66%) |
| OKLCH | oklch(62.6% 0.145 276.9) |
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 #737DDE | 3.67:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #737DDE | 5.71:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #737DDE text on white | 3.67:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #737DDE text on black | 5.71:1 | AA | Lc -37.5 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F4
oklch(88.4% 0.04 277.8)
-
Step 300
300
#B4BDEF
oklch(80.9% 0.071 276.7)
-
Step 400
400
#8F9AE7
oklch(70.8% 0.113 276.9)
-
Step 500
500 (this color)
#737DDE
oklch(62.6% 0.145 276.9)
-
Step 600
600
#5E66CD
oklch(55.6% 0.157 276.7)
-
Step 700
700
#4E54B2
oklch(49.2% 0.147 276.8)
-
Step 800
800
#404590
oklch(42.7% 0.122 277.1)
-
Step 900
900
#363B73
oklch(37.8% 0.095 277)
-
Step 950
950
#1F2343
oklch(27% 0.059 276.3)
#737DDE 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) | #568AE2 | 0.043 |
| Deuteranopia (no green cones) | #4C81DC | 0.045 |
| Tritanopia (no blue cones) | #4A91A3 | 0.127 |
| Achromatopsia (no color) | #858585 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737DDE
#737DDE
oklch(62.6% 0.145 276.9)
- #9E8700
#9E8700
oklch(62.6% 0.129 97)
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 #737DDE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.033
- Cornflower #6A79F7 ΔE 0.042
- Medium Purple #9370DB ΔE 0.054
- Lavender Blue #8B88F8 ΔE 0.058
- Perrywinkle #8F8CE7 ΔE 0.059
- Medium Slate Blue #7B68EE ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.062
Use #737DDE 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.