#737BFB
Closest named color: Cornflower (#6A79F7). oklch(64.1% 0.187 277), rgb(115, 123, 251).
Aa
Black text reads best on this color (5.95:1).
About this color
#737BFB is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.187 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.015 away. Black text reads best on it, at 5.95:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.95:1 |
| White text | 3.52:1 |
Values
| HEX | #737BFB |
| RGB | rgb(115, 123, 251) |
| HSL | hsl(236, 94%, 72%) |
| OKLCH | oklch(64.1% 0.187 277) |
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 #737BFB | 3.52:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #737BFB | 5.95:1 | AA | Lc 41.5 | Non-text elements, placeholder text |
| #737BFB text on white | 3.52:1 | AA large text | Lc 62.6 | Content text, not long reading |
| #737BFB text on black | 5.95:1 | AA | Lc -39.1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D0D7FB
oklch(88.5% 0.05 276.6)
-
Step 300
300
#B1BCFC
oklch(81% 0.091 276.6)
-
Step 400
400
#8A96FA
oklch(70.7% 0.146 276.8)
-
Step 500
500 (this color)
#737BFB
oklch(64.1% 0.187 277)
-
Step 600
600
#5B5DE7
oklch(55.7% 0.204 276.9)
-
Step 700
700
#4C4BC8
oklch(49.1% 0.189 277.2)
-
Step 800
800
#3E3FA2
oklch(42.8% 0.156 277.1)
-
Step 900
900
#343781
oklch(37.8% 0.122 277.1)
-
Step 950
950
#1E214B
oklch(27.1% 0.077 276.9)
#737BFB 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) | #368EFF | 0.068 |
| Deuteranopia (no green cones) | #1F83F8 | 0.073 |
| Tritanopia (no blue cones) | #2E98AF | 0.165 |
| Achromatopsia (no color) | #888888 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737BFB
#737BFB
oklch(64.1% 0.187 277)
- #A38B00
#A38B00
oklch(63.9% 0.132 96.8)
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 #737BFB, closest first.
No curated palette has a color within ΔE 0.04 of #737BFB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.015
- Periwinkle #8E82FE ΔE 0.044
- Medium Slate Blue #7B68EE ΔE 0.046
- Soft Blue #6488EA ΔE 0.046
- Lavender Blue #8B88F8 ΔE 0.049
- Medium Purple #9370DB ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.071
- Cornflower Blue #6495ED ΔE 0.072
Use #737BFB 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.