#575CAE
Closest named color: Iris (#6258C4). oklch(51.1% 0.128 278.2), rgb(87, 92, 174).
Aa
White text reads best on this color (5.91:1).
About this color
#575CAE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.128 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.040 away. White text reads best on it, at 5.91:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.54:1 |
| White text | 5.91:1 |
Values
| HEX | #575CAE |
| RGB | rgb(87, 92, 174) |
| HSL | hsl(237, 35%, 51%) |
| OKLCH | oklch(51.1% 0.128 278.2) |
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 #575CAE | 5.91:1 | AA | Lc -84.7 | Fine for body text |
| Black text on #575CAE | 3.54:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #575CAE text on white | 5.91:1 | AA | Lc 79.4 | Fine for body text |
| #575CAE text on black | 3.54:1 | AA large text | Lc -22.4 | 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
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D3D7F0
oklch(88.4% 0.035 278.4)
-
Step 300
300
#B7BDE9
oklch(80.8% 0.062 278.8)
-
Step 400
400
#929ADE
oklch(70.6% 0.1 278.4)
-
Step 500
500
#7980D5
oklch(63.1% 0.127 278.5)
-
Step 600
600
#6268C2
oklch(55.6% 0.138 278)
-
Step 700
700 (this color)
#575CAE
oklch(51.1% 0.128 278.2)
-
Step 800
800
#434788
oklch(42.8% 0.106 278.3)
-
Step 900
900
#383C6D
oklch(37.8% 0.083 278.1)
-
Step 950
950
#212340
oklch(27% 0.054 279.2)
#575CAE 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) | #3968B1 | 0.044 |
| Deuteranopia (no green cones) | #3161AC | 0.045 |
| Tritanopia (no blue cones) | #356E7C | 0.114 |
| Achromatopsia (no color) | #646464 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575CAE
#575CAE
oklch(51.1% 0.128 278.2)
- #776600
#776600
oklch(51.1% 0.106 97.7)
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 #575CAE, closest first.
No curated palette has a color within ΔE 0.04 of #575CAE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.040
- French Blue #436BAD ΔE 0.045
- Dusky Blue #475F94 ΔE 0.050
- Mid Blue #276AB3 ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.060
- Twilight #4E518B ΔE 0.062
Use #575CAE 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.