#515CC6
Closest named color: Iris (#6258C4). oklch(52.3% 0.163 274.8), rgb(81, 92, 198).
Aa
White text reads best on this color (5.68:1).
About this color
#515CC6 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.163 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.025 away. White text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #515CC6 |
| RGB | rgb(81, 92, 198) |
| HSL | hsl(234, 51%, 55%) |
| OKLCH | oklch(52.3% 0.163 274.8) |
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 #515CC6 | 5.68:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #515CC6 | 3.69:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #515CC6 text on white | 5.68:1 | AA | Lc 78.1 | Fine for body text |
| #515CC6 text on black | 3.69:1 | AA large text | Lc -23.7 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300
#B1BDF4
oklch(80.8% 0.079 274.9)
-
Step 400
400
#8A99EF
oklch(70.7% 0.127 275.2)
-
Step 500
500
#6E7DEA
oklch(63% 0.163 274.8)
-
Step 600
600
#5864D8
oklch(55.6% 0.176 274.7)
-
Step 700
700 (this color)
#515CC6
oklch(52.3% 0.163 274.8)
-
Step 800
800
#3B4497
oklch(42.7% 0.135 274.5)
-
Step 900
900
#323A78
oklch(37.6% 0.105 274.7)
-
Step 950
950
#1D2347
oklch(27.1% 0.067 274)
#515CC6 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) | #196CCA | 0.057 |
| Deuteranopia (no green cones) | #0062C4 | 0.058 |
| Tritanopia (no blue cones) | #007588 | 0.143 |
| Achromatopsia (no color) | #676767 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515CC6
#515CC6
oklch(52.3% 0.163 274.8)
- #7E6800
#7E6800
oklch(52.3% 0.107 94.3)
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 #515CC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.025
- Dark Periwinkle #665FD1 ΔE 0.036
- Warm Blue #4B57DB ΔE 0.036
- Slate Blue #6A5ACD ΔE 0.038
- Light Indigo #6D5ACF ΔE 0.043
- Royal Blue #4169E1 ΔE 0.051
- French Blue #436BAD ΔE 0.061
- Bluey Purple #6241C7 ΔE 0.062
Use #515CC6 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.