#0A3045
Closest named color: Oxford Blue (#1B263B). oklch(29.4% 0.056 237.8), rgb(10, 48, 69).
Aa
White text reads best on this color (13.80:1).
About this color
#0A3045 is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.056 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 13.80:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.52:1 |
| White text | 13.80:1 |
Values
| HEX | #0A3045 |
| RGB | rgb(10, 48, 69) |
| HSL | hsl(201, 75%, 15%) |
| OKLCH | oklch(29.4% 0.056 237.8) |
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 #0A3045 | 13.80:1 | AAA | Lc -103.3 | Preferred for body text |
| Black text on #0A3045 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #0A3045 text on white | 13.80:1 | AAA | Lc 100.2 | Preferred for body text |
| #0A3045 text on black | 1.52:1 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C3DDEF
oklch(88.4% 0.037 238.1)
-
Step 300
300
#98C8E7
oklch(81% 0.067 237)
-
Step 400
400
#5AAADB
oklch(70.7% 0.106 237.7)
-
Step 500
500
#0F93D1
oklch(63% 0.136 237.9)
-
Step 600
600
#007CB2
oklch(55.6% 0.123 237.7)
-
Step 700
700
#006896
oklch(49.1% 0.108 237.6)
-
Step 800
800
#00557C
oklch(42.7% 0.094 237.9)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950 (this color)
#0A3045
oklch(29.4% 0.056 237.8)
#0A3045 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) | #263046 | 0.032 |
| Deuteranopia (no green cones) | #1E2A45 | 0.027 |
| Tritanopia (no blue cones) | #003537 | 0.036 |
| Achromatopsia (no color) | #2D2D2D | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A3045
#0A3045
oklch(29.4% 0.056 237.8)
- #41240D
#41240D
oklch(29.3% 0.056 56.5)
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 #0A3045, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Midnight Green #073B4C ΔE 0.037
- Gunmetal #293241 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.045
- Dark #1B2431 ΔE 0.048
- Marine #042E60 ΔE 0.051
Use #0A3045 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.