#2C4B63
Closest named color: Dark Grey Blue (#29465B). oklch(40% 0.055 243.1), rgb(44, 75, 99).
Aa
White text reads best on this color (9.15:1).
About this color
#2C4B63 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.055 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.019 away. White text reads best on it, at 9.15:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.29:1 |
| White text | 9.15:1 |
Values
| HEX | #2C4B63 |
| RGB | rgb(44, 75, 99) |
| HSL | hsl(206, 38%, 28%) |
| OKLCH | oklch(40% 0.055 243.1) |
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 #2C4B63 | 9.15:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #2C4B63 | 2.29:1 | Fails | Lc 13.0 | Not readable |
| #2C4B63 text on white | 9.15:1 | AAA | Lc 91.0 | Preferred for body text |
| #2C4B63 text on black | 2.29:1 | Fails | Lc -11.3 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#ABC4DA
oklch(80.9% 0.041 244.9)
-
Step 400
400
#7DA6C7
oklch(70.7% 0.066 243.1)
-
Step 500
500
#5A8FB9
oklch(63% 0.085 243.6)
-
Step 600
600
#3F79A5
oklch(55.6% 0.092 243.4)
-
Step 700
700
#30668D
oklch(49.1% 0.085 242.6)
-
Step 800
800
#295373
oklch(42.7% 0.071 243.6)
-
Step 900
900 (this color)
#2C4B63
oklch(40% 0.055 243.1)
-
Step 950
950
#172836
oklch(26.9% 0.035 244.4)
#2C4B63 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) | #414B64 | 0.028 |
| Deuteranopia (no green cones) | #394563 | 0.024 |
| Tritanopia (no blue cones) | #0D5153 | 0.046 |
| Achromatopsia (no color) | #484848 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C4B63
#2C4B63
oklch(40% 0.055 243.1)
- #5D4127
#5D4127
oklch(40% 0.055 63)
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 #2C4B63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.019
- Charcoal #264653 ΔE 0.030
- Dark Slate Gray #2F4F4F ΔE 0.041
- Deep Teal #00555A ΔE 0.047
- Dark Teal #014D4E ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.055
- Light Navy #155084 ΔE 0.055
- Charcoal Grey #3C4142 ΔE 0.057
Use #2C4B63 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.