#515AAE
Closest named color: Iris (#6258C4). oklch(50.3% 0.132 276), rgb(81, 90, 174).
Aa
White text reads best on this color (6.13:1).
About this color
#515AAE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.132 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.044 away. White text reads best on it, at 6.13:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.42:1 |
| White text | 6.13:1 |
Values
| HEX | #515AAE |
| RGB | rgb(81, 90, 174) |
| HSL | hsl(234, 36%, 50%) |
| OKLCH | oklch(50.3% 0.132 276) |
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 #515AAE | 6.13:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #515AAE | 3.42:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #515AAE text on white | 6.13:1 | AA | Lc 80.4 | Fine for body text |
| #515AAE text on black | 3.42:1 | AA large text | Lc -21.4 | 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
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B5BEEB
oklch(81% 0.064 276)
-
Step 400
400
#8F9BE0
oklch(70.7% 0.102 275.9)
-
Step 500
500
#7581D8
oklch(63.2% 0.131 276)
-
Step 600
600
#5E68C5
oklch(55.5% 0.143 276.1)
-
Step 700
700 (this color)
#515AAE
oklch(50.3% 0.132 276)
-
Step 800
800
#40478A
oklch(42.7% 0.11 276.2)
-
Step 900
900
#363C6E
oklch(37.7% 0.085 276.3)
-
Step 950
950
#1F2441
oklch(27.1% 0.054 274.8)
#515AAE 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) | #3366B1 | 0.042 |
| Deuteranopia (no green cones) | #295EAC | 0.044 |
| Tritanopia (no blue cones) | #266C7B | 0.117 |
| Achromatopsia (no color) | #626262 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515AAE
#515AAE
oklch(50.3% 0.132 276)
- #766300
#766300
oklch(50.3% 0.103 95.9)
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 #515AAE, closest first.
No curated palette has a color within ΔE 0.04 of #515AAE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.044
- French Blue #436BAD ΔE 0.047
- Dusky Blue #475F94 ΔE 0.049
- Mid Blue #276AB3 ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.055
- Twilight #4E518B ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.064
Use #515AAE 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.