#2B4860
Closest named color: Dark Grey Blue (#29465B). oklch(39% 0.054 244.8), rgb(43, 72, 96).
Aa
White text reads best on this color (9.55:1).
About this color
#2B4860 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.054 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.010 away. White text reads best on it, at 9.55:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.19:1 |
| White text | 9.55:1 |
Values
| HEX | #2B4860 |
| RGB | rgb(43, 72, 96) |
| HSL | hsl(207, 38%, 27%) |
| OKLCH | oklch(39% 0.054 244.8) |
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 #2B4860 | 9.55:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #2B4860 | 2.19:1 | Fails | Lc 11.9 | Not readable |
| #2B4860 text on white | 9.55:1 | AAA | Lc 92.0 | Preferred for body text |
| #2B4860 text on black | 2.19:1 | Fails | Lc -10.4 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#ACC4D9
oklch(80.9% 0.04 244.7)
-
Step 400
400
#7FA5C7
oklch(70.6% 0.065 245.9)
-
Step 500
500
#5D8FB8
oklch(63.1% 0.082 244.4)
-
Step 600
600
#4278A4
oklch(55.5% 0.09 245)
-
Step 700
700
#34658D
oklch(49.1% 0.084 245.3)
-
Step 800
800
#2B5372
oklch(42.7% 0.069 243.8)
-
Step 900
900 (this color)
#2B4860
oklch(39% 0.054 244.8)
-
Step 950
950
#182836
oklch(27% 0.034 245.9)
#2B4860 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) | #3E4861 | 0.025 |
| Deuteranopia (no green cones) | #374360 | 0.021 |
| Tritanopia (no blue cones) | #0E4E50 | 0.046 |
| Achromatopsia (no color) | #454545 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4860
#2B4860
oklch(39% 0.054 244.8)
- #593F25
#593F25
oklch(39% 0.054 65.1)
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 #2B4860, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.010
- Charcoal #264653 ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.043
- Dark Teal #014D4E ΔE 0.050
- Deep Teal #00555A ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.052
- Twilight Blue #0A437A ΔE 0.056
Use #2B4860 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.