#0A435A
Closest named color: Charcoal (#264653). oklch(36% 0.067 231.1), rgb(10, 67, 90).
Aa
White text reads best on this color (10.69:1).
About this color
#0A435A is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.067 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.028 away. White text reads best on it, at 10.69:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.96:1 |
| White text | 10.69:1 |
Values
| HEX | #0A435A |
| RGB | rgb(10, 67, 90) |
| HSL | hsl(197, 80%, 20%) |
| OKLCH | oklch(36% 0.067 231.1) |
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 #0A435A | 10.69:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #0A435A | 1.96:1 | Fails | Lc 9.5 | Not readable |
| #0A435A text on white | 10.69:1 | AAA | Lc 94.4 | Preferred for body text |
| #0A435A text on black | 1.96:1 | Fails | Lc -8.1 | 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 900.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#A0C7DC
oklch(80.8% 0.051 231.7)
-
Step 400
400
#6AAACA
oklch(70.7% 0.081 231.2)
-
Step 500
500
#3A94BD
oklch(63% 0.104 231.6)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900 (this color)
#0A435A
oklch(36% 0.067 231.1)
-
Step 950
950
#0D2A37
oklch(27% 0.042 230.5)
#0A435A 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) | #37425B | 0.045 |
| Deuteranopia (no green cones) | #2D3B5A | 0.038 |
| Tritanopia (no blue cones) | #00494B | 0.038 |
| Achromatopsia (no color) | #3E3E3E | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A435A
#0A435A
oklch(36% 0.067 231.1)
- #593219
#593219
oklch(36.1% 0.068 51.7)
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 #0A435A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.031
- Midnight Green #073B4C ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.045
- Dark Teal #014D4E ΔE 0.045
- Marine Blue #01386A ΔE 0.050
- Twilight Blue #0A437A ΔE 0.056
Use #0A435A 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.