#0C50A5
Closest named color: Cobalt (#1E488F). oklch(44.5% 0.151 257.4), rgb(12, 80, 165).
Aa
White text reads best on this color (7.75:1).
About this color
#0C50A5 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.151 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.040 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #0C50A5 |
| RGB | rgb(12, 80, 165) |
| HSL | hsl(213, 86%, 35%) |
| OKLCH | oklch(44.5% 0.151 257.4) |
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 #0C50A5 | 7.75:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #0C50A5 | 2.70:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #0C50A5 text on white | 7.75:1 | AAA | Lc 86.3 | Fine for body text |
| #0C50A5 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300
#9DC3FA
oklch(81% 0.088 257.6)
-
Step 400
400
#65A1F7
oklch(70.6% 0.141 257.5)
-
Step 500
500
#3887F4
oklch(63.1% 0.181 257.4)
-
Step 600
600
#096DE3
oklch(55.5% 0.197 257.6)
-
Step 700
700
#005BC2
oklch(49% 0.177 257.5)
-
Step 800
800 (this color)
#0C50A5
oklch(44.5% 0.151 257.4)
-
Step 900
900
#103F7E
oklch(37.6% 0.118 257.5)
-
Step 950
950
#0C264A
oklch(27.1% 0.074 257.4)
#0C50A5 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) | #1659A8 | 0.026 |
| Deuteranopia (no green cones) | #004CA3 | 0.013 |
| Tritanopia (no blue cones) | #006572 | 0.115 |
| Achromatopsia (no color) | #525252 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C50A5
#0C50A5
oklch(44.5% 0.151 257.4)
- #704C00
#704C00
oklch(44.5% 0.093 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 #0C50A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.040
- Dusk Blue #26538D ΔE 0.044
- Light Navy #155084 ΔE 0.054
- Sapphire #2138AB ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.062
- Light Navy Blue #2E5A88 ΔE 0.064
- Blue Blue #2242C7 ΔE 0.064
Use #0C50A5 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.