#5B5DC8
Closest named color: Iris (#6258C4). oklch(53.4% 0.163 278.5), rgb(91, 93, 200).
Aa
White text reads best on this color (5.46:1).
About this color
#5B5DC8 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.163 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.015 away. White text reads best on it, at 5.46:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #5B5DC8 |
| RGB | rgb(91, 93, 200) |
| HSL | hsl(239, 50%, 57%) |
| OKLCH | oklch(53.4% 0.163 278.5) |
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 #5B5DC8 | 5.46:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #5B5DC8 | 3.84:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #5B5DC8 text on white | 5.46:1 | AA | Lc 77.0 | Fine for body text |
| #5B5DC8 text on black | 3.84:1 | AA large text | Lc -24.8 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F4
oklch(88.4% 0.04 277.8)
-
Step 300
300
#B5BCF0
oklch(80.8% 0.074 278.6)
-
Step 400
400
#9098E9
oklch(70.6% 0.118 278.6)
-
Step 500
500
#777DE2
oklch(63.1% 0.15 278.6)
-
Step 600
600 (this color)
#5B5DC8
oklch(53.4% 0.163 278.5)
-
Step 700
700
#5152B4
oklch(49.1% 0.152 278.8)
-
Step 800
800
#424491
oklch(42.7% 0.124 278.6)
-
Step 900
900
#373A74
oklch(37.7% 0.097 278.4)
-
Step 950
950
#202244
oklch(26.9% 0.063 278.8)
#5B5DC8 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) | #1E6ECC | 0.065 |
| Deuteranopia (no green cones) | #0365C6 | 0.070 |
| Tritanopia (no blue cones) | #267589 | 0.142 |
| Achromatopsia (no color) | #696969 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B5DC8
#5B5DC8
oklch(53.4% 0.163 278.5)
- #7E6D00
#7E6D00
oklch(53.5% 0.111 98.4)
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 #5B5DC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.015
- Dark Periwinkle #665FD1 ΔE 0.022
- Slate Blue #6A5ACD ΔE 0.024
- Light Indigo #6D5ACF ΔE 0.030
- Warm Blue #4B57DB ΔE 0.041
- Royal Blue #4169E1 ΔE 0.052
- Bluey Purple #6241C7 ΔE 0.062
- Neon Blue #4361EE ΔE 0.064
Use #5B5DC8 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.