#575BAC
Closest named color: Iris (#6258C4). oklch(50.8% 0.127 278.7), rgb(87, 91, 172).
Aa
White text reads best on this color (6.00:1).
About this color
#575BAC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.127 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.043 away. White text reads best on it, at 6.00:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.49:1 |
| White text | 6.00:1 |
Values
| HEX | #575BAC |
| RGB | rgb(87, 91, 172) |
| HSL | hsl(237, 34%, 51%) |
| OKLCH | oklch(50.8% 0.127 278.7) |
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 #575BAC | 6.00:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #575BAC | 3.49:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #575BAC text on white | 6.00:1 | AA | Lc 79.8 | Fine for body text |
| #575BAC text on black | 3.49:1 | AA large text | Lc -22.0 | 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
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7F0
oklch(88.5% 0.034 280.2)
-
Step 300
300
#B7BDE8
oklch(80.8% 0.061 278.7)
-
Step 400
400
#939ADD
oklch(70.6% 0.098 279)
-
Step 500
500
#7980D4
oklch(63.1% 0.126 278.5)
-
Step 600
600
#6368C1
oklch(55.6% 0.136 278.6)
-
Step 700
700 (this color)
#575BAC
oklch(50.8% 0.127 278.7)
-
Step 800
800
#434787
oklch(42.7% 0.105 278.3)
-
Step 900
900
#393C6C
oklch(37.8% 0.081 279)
-
Step 950
950
#21233F
oklch(26.9% 0.052 279.2)
#575BAC 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) | #3866AF | 0.043 |
| Deuteranopia (no green cones) | #3160AA | 0.045 |
| Tritanopia (no blue cones) | #376C7B | 0.110 |
| Achromatopsia (no color) | #636363 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575BAC
#575BAC
oklch(50.8% 0.127 278.7)
- #756600
#756600
oklch(50.9% 0.106 99.2)
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 #575BAC, closest first.
No curated palette has a color within ΔE 0.04 of #575BAC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.043
- French Blue #436BAD ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.057
- Twilight #4E518B ΔE 0.058
- Mid Blue #276AB3 ΔE 0.059
- Slate Blue #6A5ACD ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.063
Use #575BAC 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.