#5A5EB8
Closest named color: Iris (#6258C4). oklch(52.4% 0.139 278.5), rgb(90, 94, 184).
Aa
White text reads best on this color (5.63:1).
About this color
#5A5EB8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.139 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.027 away. White text reads best on it, at 5.63:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.72:1 |
| White text | 5.63:1 |
Values
| HEX | #5A5EB8 |
| RGB | rgb(90, 94, 184) |
| HSL | hsl(237, 40%, 54%) |
| OKLCH | oklch(52.4% 0.139 278.5) |
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 #5A5EB8 | 5.63:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #5A5EB8 | 3.72:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #5A5EB8 text on white | 5.63:1 | AA | Lc 78.0 | Fine for body text |
| #5A5EB8 text on black | 3.72:1 | AA large text | Lc -23.8 | 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
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D3D7F1
oklch(88.4% 0.036 278.7)
-
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 (this color)
#5A5EB8
oklch(52.4% 0.139 278.5)
-
Step 700
700
#5256A8
oklch(49.2% 0.129 278.4)
-
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)
#5A5EB8 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) | #356BBB | 0.050 |
| Deuteranopia (no green cones) | #2B64B6 | 0.052 |
| Tritanopia (no blue cones) | #347282 | 0.122 |
| Achromatopsia (no color) | #676767 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A5EB8
#5A5EB8
oklch(52.4% 0.139 278.5)
- #7A6A00
#7A6A00
oklch(52.4% 0.108 98.8)
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 #5A5EB8, closest first.
No curated palette has a color within ΔE 0.04 of #5A5EB8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.027
- Slate Blue #6A5ACD ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.043
- Light Indigo #6D5ACF ΔE 0.047
- French Blue #436BAD ΔE 0.048
- Mid Blue #276AB3 ΔE 0.060
- Warm Blue #4B57DB ΔE 0.062
- Dusky Blue #475F94 ΔE 0.065
Use #5A5EB8 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.