#4381AA
Closest named color: Steel Blue (#4682B4). oklch(57.9% 0.09 239.8), rgb(67, 129, 170).
Aa
Black text reads best on this color (4.95:1).
About this color
#4381AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.090 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.016 away. Black text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.95:1 |
| White text | 4.23:1 |
Values
| HEX | #4381AA |
| RGB | rgb(67, 129, 170) |
| HSL | hsl(204, 43%, 46%) |
| OKLCH | oklch(57.9% 0.09 239.8) |
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 #4381AA | 4.23:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #4381AA | 4.95:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #4381AA text on white | 4.23:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #4381AA text on black | 4.95:1 | AA | Lc -32.6 | Non-text elements, placeholder text |
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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#AAC5D9
oklch(81% 0.041 240.1)
-
Step 400
400
#7BA7C5
oklch(70.8% 0.065 238.7)
-
Step 500
500
#5890B7
oklch(63% 0.084 240.3)
-
Step 600
600 (this color)
#4381AA
oklch(57.9% 0.09 239.8)
-
Step 700
700
#2D678B
oklch(49.2% 0.083 238.9)
-
Step 800
800
#275471
oklch(42.8% 0.069 239.4)
-
Step 900
900
#25455B
oklch(37.6% 0.054 240.3)
-
Step 950
950
#162936
oklch(27.1% 0.035 239.7)
#4381AA 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) | #6E81AC | 0.048 |
| Deuteranopia (no green cones) | #6076A9 | 0.041 |
| Tritanopia (no blue cones) | #008B8F | 0.067 |
| Achromatopsia (no color) | #7B7B7B | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4381AA
#4381AA
oklch(57.9% 0.09 239.8)
- #A16D40
#A16D40
oklch(58% 0.09 60.5)
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 #4381AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.016
- Off Blue #5684AE ΔE 0.023
- Cerulean #457B9D ΔE 0.023
- Cool Blue #4984B8 ΔE 0.023
- Stormy Blue #507B9C ΔE 0.025
- Dusty Blue #5A86AD ΔE 0.029
- Blue NCS #118AB2 ΔE 0.033
- Dull Blue #49759C ΔE 0.036
Use #4381AA 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.