#0A3038
Closest named color: Oxford Blue (#1B263B). oklch(28.7% 0.044 214.7), rgb(10, 48, 56).
Aa
White text reads best on this color (14.06:1).
About this color
#0A3038 is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.044 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.039 away. White text reads best on it, at 14.06:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.49:1 |
| White text | 14.06:1 |
Values
| HEX | #0A3038 |
| RGB | rgb(10, 48, 56) |
| HSL | hsl(190, 70%, 13%) |
| OKLCH | oklch(28.7% 0.044 214.7) |
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 #0A3038 | 14.06:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #0A3038 | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #0A3038 text on white | 14.06:1 | AAA | Lc 100.6 | Preferred for body text |
| #0A3038 text on black | 1.49:1 | Fails | Lc 0.0 | Not readable |
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 950.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#DFEDF0
oklch(93.7% 0.015 212)
-
Step 200
200
#C5DEE5
oklch(88.4% 0.028 216.4)
-
Step 300
300
#9BCAD5
oklch(80.9% 0.052 213.7)
-
Step 400
400
#5EAEC1
oklch(70.7% 0.083 215)
-
Step 500
500
#1C99B1
oklch(63.1% 0.106 214.9)
-
Step 600
600
#008197
oklch(55.5% 0.098 215.2)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#004A57
oklch(37.6% 0.066 214.5)
-
Step 950
950 (this color)
#0A3038
oklch(28.7% 0.044 214.7)
#0A3038 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) | #2A2E38 | 0.039 |
| Deuteranopia (no green cones) | #242938 | 0.036 |
| Tritanopia (no blue cones) | #003332 | 0.019 |
| Achromatopsia (no color) | #2B2B2B | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A3038
#0A3038
oklch(28.7% 0.044 214.7)
- #3D221C
#3D221C
oklch(28.6% 0.043 33.3)
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 #0A3038, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.039
- Dark #1B2431 ΔE 0.042
- Gunmetal #293241 ΔE 0.042
- Jet #212529 ΔE 0.044
- Midnight Green #073B4C ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.062
Use #0A3038 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.