#555FE2
Closest named color: Warm Blue (#4B57DB). oklch(55.3% 0.196 274.7), rgb(85, 95, 226).
Aa
White text reads best on this color (5.09:1).
About this color
#555FE2 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.196 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.026 away. White text reads best on it, at 5.09:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 4.12:1 |
| White text | 5.09:1 |
Values
| HEX | #555FE2 |
| RGB | rgb(85, 95, 226) |
| HSL | hsl(236, 71%, 61%) |
| OKLCH | oklch(55.3% 0.196 274.7) |
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 #555FE2 | 5.09:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #555FE2 | 4.12:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #555FE2 text on white | 5.09:1 | AA | Lc 74.7 | Content text, not long reading |
| #555FE2 text on black | 4.12:1 | AA large text | Lc -27.0 | 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
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CFD7FA
oklch(88.4% 0.049 275.2)
-
Step 300
300
#AFBDFA
oklch(80.9% 0.088 274.3)
-
Step 400
400
#8798F8
oklch(70.7% 0.141 274.6)
-
Step 500
500
#6C7BF4
oklch(63.1% 0.18 274.7)
-
Step 600
600 (this color)
#555FE2
oklch(55.3% 0.196 274.7)
-
Step 700
700
#474EC5
oklch(49% 0.182 274.9)
-
Step 800
800
#3A41A0
oklch(42.7% 0.152 274.8)
-
Step 900
900
#31387F
oklch(37.7% 0.119 274.9)
-
Step 950
950
#1C224A
oklch(27% 0.074 274)
#555FE2 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) | #0074E6 | 0.067 |
| Deuteranopia (no green cones) | #0068DF | 0.059 |
| Tritanopia (no blue cones) | #007F97 | 0.166 |
| Achromatopsia (no color) | #6E6E6E | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #555FE2
#555FE2
oklch(55.3% 0.196 274.7)
- #887000
#887000
oklch(55.2% 0.113 94)
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 #555FE2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.026
- Neon Blue #4361EE ΔE 0.027
- Royal Blue #4169E1 ΔE 0.030
- Dark Periwinkle #665FD1 ΔE 0.035
- Slate Blue #6A5ACD ΔE 0.044
- Light Indigo #6D5ACF ΔE 0.045
- Iris #6258C4 ΔE 0.050
- Azul #1D5DEC ΔE 0.055
Use #555FE2 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.