#5A55E5
Closest named color: Warm Blue (#4B57DB). oklch(54.1% 0.211 278.2), rgb(90, 85, 229).
Aa
White text reads best on this color (5.43:1).
About this color
#5A55E5 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.211 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.025 away. White text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.211) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #5A55E5 |
| RGB | rgb(90, 85, 229) |
| HSL | hsl(242, 73%, 62%) |
| OKLCH | oklch(54.1% 0.211 278.2) |
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 #5A55E5 | 5.43:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #5A55E5 | 3.86:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #5A55E5 text on white | 5.43:1 | AA | Lc 76.5 | Fine for body text |
| #5A55E5 text on black | 3.86:1 | AA large text | Lc -25.2 | 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
#E5E9FD
oklch(93.7% 0.027 276.8)
-
Step 200
200
#D0D6FC
oklch(88.4% 0.053 278.2)
-
Step 300
300
#B2BBFE
oklch(80.9% 0.095 278.1)
-
Step 400
400
#8C95FD
oklch(70.8% 0.151 278.1)
-
Step 500
500
#7376FB
oklch(63.2% 0.194 278.3)
-
Step 600
600 (this color)
#5A55E5
oklch(54.1% 0.211 278.2)
-
Step 700
700
#4E48CC
oklch(49.1% 0.197 278.3)
-
Step 800
800
#3F3DA5
oklch(42.8% 0.163 277.9)
-
Step 900
900
#353583
oklch(37.7% 0.128 278.3)
-
Step 950
950
#1F204C
oklch(27% 0.08 278.7)
#5A55E5 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) | #0070EA | 0.080 |
| Deuteranopia (no green cones) | #0064E2 | 0.070 |
| Tritanopia (no blue cones) | #007995 | 0.178 |
| Achromatopsia (no color) | #6A6A6A | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A55E5
#5A55E5
oklch(54.1% 0.211 278.2)
- #806F00
#806F00
oklch(54.1% 0.112 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 #5A55E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.025
- Neon Blue #4361EE ΔE 0.037
- Dark Periwinkle #665FD1 ΔE 0.044
- Slate Blue #6A5ACD ΔE 0.047
- Light Indigo #6D5ACF ΔE 0.047
- Royal Blue #4169E1 ΔE 0.051
- Iris #6258C4 ΔE 0.053
- Purpley Blue #5F34E7 ΔE 0.058
Use #5A55E5 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.