#3955BC
Closest named color: Warm Blue (#4B57DB). oklch(48.8% 0.165 268.2), rgb(57, 85, 188).
Aa
White text reads best on this color (6.56:1).
About this color
#3955BC is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.165 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.054 away. White text reads best on it, at 6.56:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.19:1 |
| White text | 6.56:1 |
Values
| HEX | #3955BC |
| RGB | rgb(57, 85, 188) |
| HSL | hsl(227, 53%, 48%) |
| OKLCH | oklch(48.8% 0.165 268.2) |
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 #3955BC | 6.56:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #3955BC | 3.19:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #3955BC text on white | 6.56:1 | AA | Lc 82.1 | Fine for body text |
| #3955BC text on black | 3.19:1 | AA large text | Lc -19.8 | 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 700.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300
#ABBFF5
oklch(80.9% 0.08 268.8)
-
Step 400
400
#7F9CF0
oklch(70.6% 0.128 268.6)
-
Step 500
500
#6081EB
oklch(63% 0.163 268.4)
-
Step 600
600
#4868DA
oklch(55.6% 0.178 268.3)
-
Step 700
700 (this color)
#3955BC
oklch(48.8% 0.165 268.2)
-
Step 800
800
#304799
oklch(42.8% 0.137 268.3)
-
Step 900
900
#2A3C7A
oklch(37.7% 0.108 268.6)
-
Step 950
950
#182447
oklch(27% 0.067 267.5)
#3955BC 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) | #0063C0 | 0.043 |
| Deuteranopia (no green cones) | #0057BA | 0.035 |
| Tritanopia (no blue cones) | #006E80 | 0.134 |
| Achromatopsia (no color) | #5D5D5D | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3955BC
#3955BC
oklch(48.8% 0.165 268.2)
- #775C00
#775C00
oklch(48.9% 0.1 88.7)
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 #3955BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.054
- Blue Blue #2242C7 ΔE 0.056
- Iris #6258C4 ΔE 0.058
- Mid Blue #276AB3 ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.063
- Majorelle Blue #3F37C9 ΔE 0.067
- French Blue #436BAD ΔE 0.069
- Blurple #5539CC ΔE 0.070
Use #3955BC 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.