#5157AF
Closest named color: Iris (#6258C4). oklch(49.8% 0.138 277.2), rgb(81, 87, 175).
Aa
White text reads best on this color (6.30:1).
About this color
#5157AF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.138 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.042 away. White text reads best on it, at 6.30:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.33:1 |
| White text | 6.30:1 |
Values
| HEX | #5157AF |
| RGB | rgb(81, 87, 175) |
| HSL | hsl(236, 37%, 50%) |
| OKLCH | oklch(49.8% 0.138 277.2) |
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 #5157AF | 6.30:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #5157AF | 3.33:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #5157AF text on white | 6.30:1 | AA | Lc 81.2 | Fine for body text |
| #5157AF text on black | 3.33:1 | AA large text | Lc -20.7 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D7F2
oklch(88.4% 0.037 277.3)
-
Step 300
300
#B5BDEC
oklch(80.8% 0.067 277.2)
-
Step 400
400
#909AE3
oklch(70.7% 0.107 277.3)
-
Step 500
500
#767FDA
oklch(63% 0.136 277.5)
-
Step 600
600
#6067C8
oklch(55.6% 0.148 277.3)
-
Step 700
700 (this color)
#5157AF
oklch(49.8% 0.138 277.2)
-
Step 800
800
#41468C
oklch(42.7% 0.114 277.3)
-
Step 900
900
#373B70
oklch(37.7% 0.09 277.9)
-
Step 950
950
#202341
oklch(27% 0.056 277.7)
#5157AF 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) | #2C64B2 | 0.048 |
| Deuteranopia (no green cones) | #205CAD | 0.051 |
| Tritanopia (no blue cones) | #266A7B | 0.119 |
| Achromatopsia (no color) | #606060 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5157AF
#5157AF
oklch(49.8% 0.138 277.2)
- #736200
#736200
oklch(49.8% 0.103 97.3)
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 #5157AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.054
- French Blue #436BAD ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.058
- Twilight #4E518B ΔE 0.058
- Mid Blue #276AB3 ΔE 0.060
- Slate Blue #6A5ACD ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.065
Use #5157AF 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.