#5157AB
Closest named color: Iris (#6258C4). oklch(49.5% 0.132 277.3), rgb(81, 87, 171).
Aa
White text reads best on this color (6.36:1).
About this color
#5157AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.132 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.047 away. White text reads best on it, at 6.36:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.30:1 |
| White text | 6.36:1 |
Values
| HEX | #5157AB |
| RGB | rgb(81, 87, 171) |
| HSL | hsl(236, 36%, 49%) |
| OKLCH | oklch(49.5% 0.132 277.3) |
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 #5157AB | 6.36:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #5157AB | 3.30:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #5157AB text on white | 6.36:1 | AA | Lc 81.4 | Fine for body text |
| #5157AB text on black | 3.30:1 | AA large text | Lc -20.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D3D8F1
oklch(88.6% 0.035 276.7)
-
Step 300
300
#B6BDEA
oklch(80.8% 0.064 277.9)
-
Step 400
400
#919AE0
oklch(70.6% 0.103 277.8)
-
Step 500
500
#7780D7
oklch(63.1% 0.13 277.5)
-
Step 600
600
#6168C5
oklch(55.7% 0.142 277.5)
-
Step 700
700 (this color)
#5157AB
oklch(49.5% 0.132 277.3)
-
Step 800
800
#414789
oklch(42.7% 0.108 276.9)
-
Step 900
900
#373C6E
oklch(37.7% 0.085 277.2)
-
Step 950
950
#202340
oklch(26.9% 0.054 277.6)
#5157AB 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) | #3063AE | 0.045 |
| Deuteranopia (no green cones) | #265CA9 | 0.048 |
| Tritanopia (no blue cones) | #2A6979 | 0.115 |
| Achromatopsia (no color) | #5F5F5F | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5157AB
#5157AB
oklch(49.5% 0.132 277.3)
- #726100
#726100
oklch(49.4% 0.102 97.1)
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 #5157AB, closest first.
No curated palette has a color within ΔE 0.04 of #5157AB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
- Twilight #4E518B ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.053
- French Blue #436BAD ΔE 0.054
- Mid Blue #276AB3 ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.066
- Blueberry #464196 ΔE 0.067
Use #5157AB 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.