#0D42A2
Closest named color: Sapphire (#2138AB). oklch(41.2% 0.165 261.4), rgb(13, 66, 162).
Aa
White text reads best on this color (9.05:1).
About this color
#0D42A2 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.165 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.028 away. White text reads best on it, at 9.05:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.31:1 |
| White text | 9.05:1 |
Values
| HEX | #0D42A2 |
| RGB | rgb(13, 66, 162) |
| HSL | hsl(219, 85%, 34%) |
| OKLCH | oklch(41.2% 0.165 261.4) |
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 #0D42A2 | 9.05:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #0D42A2 | 2.31:1 | Fails | Lc 13.9 | Not readable |
| #0D42A2 text on white | 9.05:1 | AAA | Lc 90.1 | Preferred for body text |
| #0D42A2 text on black | 2.31:1 | Fails | Lc -12.2 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699FFF
oklch(70.8% 0.152 261.1)
-
Step 500
500
#4082FE
oklch(63% 0.197 261.6)
-
Step 600
600
#1F68ED
oklch(55.6% 0.213 261.3)
-
Step 700
700
#1255CF
oklch(49.1% 0.199 261.5)
-
Step 800
800 (this color)
#0D42A2
oklch(41.2% 0.165 261.4)
-
Step 900
900
#163D84
oklch(37.8% 0.128 261.2)
-
Step 950
950
#0E244D
oklch(26.9% 0.081 261.5)
#0D42A2 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) | #004FA5 | 0.033 |
| Deuteranopia (no green cones) | #0042A0 | 0.006 |
| Tritanopia (no blue cones) | #005B6B | 0.127 |
| Achromatopsia (no color) | #494949 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D42A2
#0D42A2
oklch(41.2% 0.165 261.4)
- #624500
#624500
oklch(41.2% 0.085 81.2)
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 #0D42A2, closest first.
No curated palette has a color within ΔE 0.04 of #0D42A2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.028
- Cobalt #1E488F ΔE 0.038
- Blue Blue #2242C7 ΔE 0.062
- Blueberry #464196 ΔE 0.063
- Dusk Blue #26538D ΔE 0.065
- Light Navy #155084 ΔE 0.066
- Twilight Blue #0A437A ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.073
Use #0D42A2 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.