#0381AA
Closest named color: Nice Blue (#107AB0). oklch(56.5% 0.111 229.5), rgb(3, 129, 170).
Aa
Black text reads best on this color (4.72:1).
About this color
#0381AA is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.111 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.025 away. Black text reads best on it, at 4.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #0381AA |
| RGB | rgb(3, 129, 170) |
| HSL | hsl(195, 97%, 34%) |
| OKLCH | oklch(56.5% 0.111 229.5) |
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 #0381AA | 4.44:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #0381AA | 4.72:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #0381AA text on white | 4.44:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #0381AA text on black | 4.72:1 | AA | Lc -31.4 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C7DDE8
oklch(88.5% 0.028 229.2)
-
Step 300
300
#A0C7DB
oklch(80.8% 0.05 230.4)
-
Step 400
400
#69AAC9
oklch(70.6% 0.08 230)
-
Step 500
500
#3995BB
oklch(63.2% 0.102 229.1)
-
Step 600
600 (this color)
#0381AA
oklch(56.5% 0.111 229.5)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#10485E
oklch(37.8% 0.067 229.4)
-
Step 950
950
#0C2A37
oklch(26.9% 0.043 229.9)
#0381AA 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) | #6C7FAC | 0.077 |
| Deuteranopia (no green cones) | #5872A9 | 0.064 |
| Tritanopia (no blue cones) | #008C8F | 0.061 |
| Achromatopsia (no color) | #787878 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0381AA
#0381AA
oklch(56.5% 0.111 229.5)
- #A96035
#A96035
oklch(56.4% 0.111 49.5)
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 #0381AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.025
- Blue NCS #118AB2 ΔE 0.028
- Teal Blue #01889F ΔE 0.031
- Cerulean #457B9D ΔE 0.036
- Ocean #017B92 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.044
- Sea Blue #047495 ΔE 0.045
Use #0381AA 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.