#0D4258
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.7% 0.065 231), rgb(13, 66, 88).
Aa
White text reads best on this color (10.83:1).
About this color
#0D4258 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.065 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.027 away. White text reads best on it, at 10.83:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.93:1 |
| White text | 10.83:1 |
Values
| HEX | #0D4258 |
| RGB | rgb(13, 66, 88) |
| HSL | hsl(198, 74%, 20%) |
| OKLCH | oklch(35.7% 0.065 231) |
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 #0D4258 | 10.83:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #0D4258 | 1.93:1 | Fails | Lc 9.1 | Not readable |
| #0D4258 text on white | 10.83:1 | AAA | Lc 94.8 | Preferred for body text |
| #0D4258 text on black | 1.93:1 | Fails | Lc -7.8 | 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
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300
#A2C7DB
oklch(80.9% 0.049 231.7)
-
Step 400
400
#6CAAC9
oklch(70.8% 0.078 231.1)
-
Step 500
500
#3F94BB
oklch(63.1% 0.1 231.2)
-
Step 600
600
#117EA7
oklch(55.7% 0.108 230.9)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#085674
oklch(42.6% 0.083 231.5)
-
Step 900
900 (this color)
#0D4258
oklch(35.7% 0.065 231)
-
Step 950
950
#0E2A37
oklch(27% 0.041 231.2)
#0D4258 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) | #374159 | 0.044 |
| Deuteranopia (no green cones) | #2D3A58 | 0.037 |
| Tritanopia (no blue cones) | #004849 | 0.039 |
| Achromatopsia (no color) | #3D3D3D | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D4258
#0D4258
oklch(35.7% 0.065 231)
- #57321A
#57321A
oklch(35.8% 0.065 52.2)
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 #0D4258, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.027
- Charcoal #264653 ΔE 0.028
- Midnight Green #073B4C ΔE 0.029
- Dark Grey Blue #29465B ΔE 0.030
- Prussian Blue #1D3557 ΔE 0.042
- Dark Teal #014D4E ΔE 0.046
- Marine Blue #01386A ΔE 0.051
- Onyx #343A40 ΔE 0.054
Use #0D4258 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.