#5C5FBB
Closest named color: Iris (#6258C4). oklch(52.9% 0.142 279), rgb(92, 95, 187).
Aa
White text reads best on this color (5.51:1).
About this color
#5C5FBB is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.142 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.024 away. White text reads best on it, at 5.51:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.80:1 |
| White text | 5.51:1 |
Values
| HEX | #5C5FBB |
| RGB | rgb(92, 95, 187) |
| HSL | hsl(238, 41%, 55%) |
| OKLCH | oklch(52.9% 0.142 279) |
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 #5C5FBB | 5.51:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #5C5FBB | 3.80:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #5C5FBB text on white | 5.51:1 | AA | Lc 77.3 | Fine for body text |
| #5C5FBB text on black | 3.80:1 | AA large text | Lc -24.4 | 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 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
#B7BDEA
oklch(80.9% 0.064 278.9)
-
Step 400
400
#939ADF
oklch(70.7% 0.101 279)
-
Step 500
500
#797FD7
oklch(63% 0.131 279)
-
Step 600
600 (this color)
#5C5FBB
oklch(52.9% 0.142 279)
-
Step 700
700
#5255A9
oklch(49% 0.132 278.8)
-
Step 800
800
#434689
oklch(42.7% 0.109 278.8)
-
Step 900
900
#383B6E
oklch(37.6% 0.086 278.8)
-
Step 950
950
#212340
oklch(27% 0.054 279.2)
#5C5FBB 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) | #346DBE | 0.053 |
| Deuteranopia (no green cones) | #2B65B9 | 0.054 |
| Tritanopia (no blue cones) | #367384 | 0.123 |
| Achromatopsia (no color) | #696969 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5C5FBB
#5C5FBB
oklch(52.9% 0.142 279)
- #7C6C00
#7C6C00
oklch(53% 0.11 99)
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 #5C5FBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.024
- Slate Blue #6A5ACD ΔE 0.037
- Dark Periwinkle #665FD1 ΔE 0.037
- Light Indigo #6D5ACF ΔE 0.042
- French Blue #436BAD ΔE 0.050
- Warm Blue #4B57DB ΔE 0.060
- Mid Blue #276AB3 ΔE 0.062
- Royal Blue #4169E1 ΔE 0.066
Use #5C5FBB 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.