#575EBC
Closest named color: Iris (#6258C4). oklch(52.4% 0.145 276.9), rgb(87, 94, 188).
Aa
White text reads best on this color (5.62:1).
About this color
#575EBC is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.145 and its hue 277°. 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 5.62:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #575EBC |
| RGB | rgb(87, 94, 188) |
| HSL | hsl(236, 43%, 54%) |
| OKLCH | oklch(52.4% 0.145 276.9) |
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 #575EBC | 5.62:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #575EBC | 3.73:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #575EBC text on white | 5.62:1 | AA | Lc 77.9 | Fine for body text |
| #575EBC text on black | 3.73:1 | AA large text | Lc -23.9 | 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 600.
-
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
#D2D8F2
oklch(88.6% 0.036 275.3)
-
Step 300
300
#B5BDEB
oklch(80.8% 0.066 277.1)
-
Step 400
400
#909AE1
oklch(70.6% 0.104 277.2)
-
Step 500
500
#7680D9
oklch(63.1% 0.133 277)
-
Step 600
600 (this color)
#575EBC
oklch(52.4% 0.145 276.9)
-
Step 700
700
#4F56AC
oklch(49.2% 0.135 276.7)
-
Step 800
800
#41468B
oklch(42.6% 0.113 277.4)
-
Step 900
900
#363C6F
oklch(37.7% 0.087 276.3)
-
Step 950
950
#202341
oklch(27% 0.056 277.7)
#575EBC 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) | #306CBF | 0.051 |
| Deuteranopia (no green cones) | #2363BA | 0.053 |
| Tritanopia (no blue cones) | #287384 | 0.128 |
| Achromatopsia (no color) | #676767 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575EBC
#575EBC
oklch(52.4% 0.145 276.9)
- #7C6900
#7C6900
oklch(52.3% 0.108 96.6)
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 #575EBC, 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 0.040
- Slate Blue #6A5ACD ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.045
- French Blue #436BAD ΔE 0.050
- Warm Blue #4B57DB ΔE 0.055
- Mid Blue #276AB3 ΔE 0.058
- Royal Blue #4169E1 ΔE 0.063
Use #575EBC 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.