#0C4FA9
Closest named color: Cobalt (#1E488F). oklch(44.6% 0.158 258.4), rgb(12, 79, 169).
Aa
White text reads best on this color (7.75:1).
About this color
#0C4FA9 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.158 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.045 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #0C4FA9 |
| RGB | rgb(12, 79, 169) |
| HSL | hsl(214, 87%, 35%) |
| OKLCH | oklch(44.6% 0.158 258.4) |
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 #0C4FA9 | 7.75:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #0C4FA9 | 2.70:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #0C4FA9 text on white | 7.75:1 | AAA | Lc 86.3 | Fine for body text |
| #0C4FA9 text on black | 2.70:1 | Fails | Lc -15.8 | Dividers and decoration only |
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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9CC3FC
oklch(81% 0.091 257.8)
-
Step 400
400
#65A1FB
oklch(70.8% 0.147 258.3)
-
Step 500
500
#3786F9
oklch(63.2% 0.188 258.3)
-
Step 600
600
#096CE8
oklch(55.7% 0.205 258.4)
-
Step 700
700
#005AC7
oklch(49.2% 0.185 258.3)
-
Step 800
800 (this color)
#0C4FA9
oklch(44.6% 0.158 258.4)
-
Step 900
900
#103F81
oklch(37.8% 0.122 258.2)
-
Step 950
950
#0B254C
oklch(27% 0.079 258.6)
#0C4FA9 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) | #055AAC | 0.030 |
| Deuteranopia (no green cones) | #004CA7 | 0.010 |
| Tritanopia (no blue cones) | #006574 | 0.119 |
| Achromatopsia (no color) | #525252 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C4FA9
#0C4FA9
oklch(44.6% 0.158 258.4)
- #704D00
#704D00
oklch(44.7% 0.093 78.6)
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 #0C4FA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.045
- Dusk Blue #26538D ΔE 0.050
- Sapphire #2138AB ΔE 0.054
- Blue Blue #2242C7 ΔE 0.057
- Light Navy #155084 ΔE 0.061
- Blueberry #464196 ΔE 0.066
- Denim Blue #3B5B92 ΔE 0.067
- Deep Sea Blue #015482 ΔE 0.068
Use #0C4FA9 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.