#0D4183
Closest named color: Twilight Blue (#0A437A). oklch(38.4% 0.123 257.1), rgb(13, 65, 131).
Aa
White text reads best on this color (9.99:1).
About this color
#0D4183 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.123 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.017 away. White text reads best on it, at 9.99:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.10:1 |
| White text | 9.99:1 |
Values
| HEX | #0D4183 |
| RGB | rgb(13, 65, 131) |
| HSL | hsl(214, 82%, 28%) |
| OKLCH | oklch(38.4% 0.123 257.1) |
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 #0D4183 | 9.99:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #0D4183 | 2.10:1 | Fails | Lc 11.3 | Not readable |
| #0D4183 text on white | 9.99:1 | AAA | Lc 92.7 | Preferred for body text |
| #0D4183 text on black | 2.10:1 | Fails | Lc -9.8 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFB
oklch(88.5% 0.051 256.7)
-
Step 300
300
#9BC3FC
oklch(80.9% 0.092 257.2)
-
Step 400
400
#61A1FB
oklch(70.6% 0.148 257.2)
-
Step 500
500
#3087F8
oklch(63.2% 0.188 256.8)
-
Step 600
600
#006EE3
oklch(55.7% 0.197 256.9)
-
Step 700
700
#005CC1
oklch(49.2% 0.175 257.1)
-
Step 800
800
#004BA0
oklch(42.8% 0.152 257.1)
-
Step 900
900 (this color)
#0D4183
oklch(38.4% 0.123 257.1)
-
Step 950
950
#09264B
oklch(27.1% 0.077 256.3)
#0D4183 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) | #194885 | 0.023 |
| Deuteranopia (no green cones) | #003E82 | 0.012 |
| Tritanopia (no blue cones) | #00515B | 0.094 |
| Achromatopsia (no color) | #424242 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D4183
#0D4183
oklch(38.4% 0.123 257.1)
- #5B3D00
#5B3D00
oklch(38.5% 0.08 77.5)
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 #0D4183, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.017
- Cobalt #1E488F ΔE 0.031
- Light Navy #155084 ΔE 0.046
- Marine Blue #01386A ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.057
- Dusk Blue #26538D ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.069
- Sapphire #2138AB ΔE 0.071
Use #0D4183 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.