#5C55DD
Closest named color: Warm Blue (#4B57DB). oklch(53.6% 0.201 279.5), rgb(92, 85, 221).
Aa
White text reads best on this color (5.52:1).
About this color
#5C55DD is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.201 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.023 away. White text reads best on it, at 5.52:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.79:1 |
| White text | 5.52:1 |
Values
| HEX | #5C55DD |
| RGB | rgb(92, 85, 221) |
| HSL | hsl(243, 67%, 60%) |
| OKLCH | oklch(53.6% 0.201 279.5) |
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 #5C55DD | 5.52:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #5C55DD | 3.79:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #5C55DD text on white | 5.52:1 | AA | Lc 77.1 | Fine for body text |
| #5C55DD text on black | 3.79:1 | AA large text | Lc -24.6 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E8FC
oklch(93.5% 0.027 281.3)
-
Step 200
200
#D2D6FB
oklch(88.5% 0.051 280.4)
-
Step 300
300
#B4BBFB
oklch(80.9% 0.091 279.3)
-
Step 400
400
#8F95F8
oklch(70.7% 0.144 279.4)
-
Step 500
500
#7677F5
oklch(63.1% 0.184 279.4)
-
Step 600
600 (this color)
#5C55DD
oklch(53.6% 0.201 279.5)
-
Step 700
700
#514AC6
oklch(49.1% 0.186 279.5)
-
Step 800
800
#423EA0
oklch(42.8% 0.154 279.5)
-
Step 900
900
#37367F
oklch(37.7% 0.12 279.6)
-
Step 950
950
#20204A
oklch(26.9% 0.076 280)
#5C55DD 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) | #006EE1 | 0.081 |
| Deuteranopia (no green cones) | #0063DA | 0.074 |
| Tritanopia (no blue cones) | #007791 | 0.173 |
| Achromatopsia (no color) | #696969 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5C55DD
#5C55DD
oklch(53.6% 0.201 279.5)
- #7D6E00
#7D6E00
oklch(53.6% 0.111 99.9)
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 #5C55DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.023
- Dark Periwinkle #665FD1 ΔE 0.035
- Slate Blue #6A5ACD ΔE 0.036
- Light Indigo #6D5ACF ΔE 0.037
- Iris #6258C4 ΔE 0.041
- Neon Blue #4361EE ΔE 0.045
- Royal Blue #4169E1 ΔE 0.052
- Bluey Purple #6241C7 ΔE 0.054
Use #5C55DD 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.