#585CB5
Closest named color: Iris (#6258C4). oklch(51.7% 0.138 278.5), rgb(88, 92, 181).
Aa
White text reads best on this color (5.81:1).
About this color
#585CB5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.138 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.030 away. White text reads best on it, at 5.81:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #585CB5 |
| RGB | rgb(88, 92, 181) |
| HSL | hsl(237, 39%, 53%) |
| OKLCH | oklch(51.7% 0.138 278.5) |
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 #585CB5 | 5.81:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #585CB5 | 3.61:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #585CB5 text on white | 5.81:1 | AA | Lc 78.9 | Fine for body text |
| #585CB5 text on black | 3.61:1 | AA large text | Lc -22.9 | 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 700.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D3D7F2
oklch(88.4% 0.037 278.9)
-
Step 300
300
#B6BDEC
oklch(80.9% 0.067 278.2)
-
Step 400
400
#929AE2
oklch(70.8% 0.105 278.5)
-
Step 500
500
#787FDA
oklch(63.1% 0.136 278.4)
-
Step 600
600
#6266C8
oklch(55.6% 0.149 278.6)
-
Step 700
700 (this color)
#585CB5
oklch(51.7% 0.138 278.5)
-
Step 800
800
#42468C
oklch(42.8% 0.114 278)
-
Step 900
900
#383B70
oklch(37.7% 0.089 278.7)
-
Step 950
950
#202341
oklch(27% 0.056 277.7)
#585CB5 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) | #3369B8 | 0.049 |
| Deuteranopia (no green cones) | #2962B3 | 0.052 |
| Tritanopia (no blue cones) | #326F80 | 0.119 |
| Achromatopsia (no color) | #656565 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #585CB5
#585CB5
oklch(51.7% 0.138 278.5)
- #786800
#786800
oklch(51.7% 0.107 98.6)
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 #585CB5, closest first.
No curated palette has a color within ΔE 0.04 of #585CB5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.030
- Slate Blue #6A5ACD ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.049
- French Blue #436BAD ΔE 0.049
- Light Indigo #6D5ACF ΔE 0.052
- Mid Blue #276AB3 ΔE 0.059
- Dusky Blue #475F94 ΔE 0.060
- Warm Blue #4B57DB ΔE 0.064
Use #585CB5 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.