#0A2A3A
Closest named color: Oxford Blue (#1B263B). oklch(27% 0.047 234.3), rgb(10, 42, 58).
Aa
White text reads best on this color (14.94:1).
About this color
#0A2A3A is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.047 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.022 away. White text reads best on it, at 14.94:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.40:1 |
| White text | 14.94:1 |
Values
| HEX | #0A2A3A |
| RGB | rgb(10, 42, 58) |
| HSL | hsl(200, 71%, 13%) |
| OKLCH | oklch(27% 0.047 234.3) |
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 #0A2A3A | 14.94:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #0A2A3A | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #0A2A3A text on white | 14.94:1 | AAA | Lc 101.6 | Preferred for body text |
| #0A2A3A text on black | 1.40:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C6DDEB
oklch(88.5% 0.031 234.5)
-
Step 300
300
#9EC7E0
oklch(80.9% 0.056 235.2)
-
Step 400
400
#65AAD0
oklch(70.7% 0.089 234.1)
-
Step 500
500
#3294C4
oklch(63.1% 0.114 234.4)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#0A4763
oklch(37.6% 0.075 234.9)
-
Step 950
950 (this color)
#0A2A3A
oklch(27% 0.047 234.3)
#0A2A3A 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) | #222A3B | 0.029 |
| Deuteranopia (no green cones) | #1C253A | 0.025 |
| Tritanopia (no blue cones) | #002E2F | 0.030 |
| Achromatopsia (no color) | #272727 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2A3A
#0A2A3A
oklch(27% 0.047 234.3)
- #38200F
#38200F
oklch(27.1% 0.046 54.7)
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 #0A2A3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.022
- Dark #1B2431 ΔE 0.027
- Jet #212529 ΔE 0.039
- Space Cadet #2B2D42 ΔE 0.048
- Gunmetal #293241 ΔE 0.051
- Rich Black #0D1B2A ΔE 0.055
- Midnight Green #073B4C ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.065
Use #0A2A3A 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.