#2C4283
Closest named color: Cobalt (#1E488F). oklch(39.8% 0.112 267.1), rgb(44, 66, 131).
Aa
White text reads best on this color (9.48:1).
About this color
#2C4283 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.112 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.026 away. White text reads best on it, at 9.48:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.21:1 |
| White text | 9.48:1 |
Values
| HEX | #2C4283 |
| RGB | rgb(44, 66, 131) |
| HSL | hsl(225, 50%, 34%) |
| OKLCH | oklch(39.8% 0.112 267.1) |
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 #2C4283 | 9.48:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #2C4283 | 2.21:1 | Fails | Lc 12.3 | Not readable |
| #2C4283 text on white | 9.48:1 | AAA | Lc 91.7 | Preferred for body text |
| #2C4283 text on black | 2.21:1 | Fails | Lc -10.7 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9F9
oklch(88.5% 0.047 266.7)
-
Step 300
300
#A8C0F8
oklch(81% 0.084 266.5)
-
Step 400
400
#7B9CF5
oklch(70.6% 0.136 267.5)
-
Step 500
500
#5B81F1
oklch(63.1% 0.173 267.2)
-
Step 600
600
#4267DF
oklch(55.5% 0.188 267.1)
-
Step 700
700
#3555C2
oklch(49.1% 0.175 267.2)
-
Step 800
800
#2C469D
oklch(42.7% 0.145 267.3)
-
Step 900
900 (this color)
#2C4283
oklch(39.8% 0.112 267.1)
-
Step 950
950
#172449
oklch(27.1% 0.071 267.1)
#2C4283 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) | #204A85 | 0.024 |
| Deuteranopia (no green cones) | #0E4282 | 0.026 |
| Tritanopia (no blue cones) | #00515C | 0.094 |
| Achromatopsia (no color) | #464646 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C4283
#2C4283
oklch(39.8% 0.112 267.1)
- #5A4400
#5A4400
oklch(39.9% 0.082 87.6)
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 #2C4283, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.026
- Twilight Blue #0A437A ΔE 0.033
- Light Navy #155084 ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.044
- Dusk Blue #26538D ΔE 0.049
- Blueberry #464196 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.055
- Marine Blue #01386A ΔE 0.066
Use #2C4283 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.