#2B4168
Closest named color: Dark Grey Blue (#29465B). oklch(37.7% 0.073 261.2), rgb(43, 65, 104).
Aa
White text reads best on this color (10.20:1).
About this color
#2B4168 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.073 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.031 away. White text reads best on it, at 10.20:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.05:1 |
| White text | 10.20:1 |
Values
| HEX | #2B4168 |
| RGB | rgb(43, 65, 104) |
| HSL | hsl(218, 41%, 29%) |
| OKLCH | oklch(37.7% 0.073 261.2) |
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 #2B4168 | 10.20:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #2B4168 | 2.05:1 | Fails | Lc 10.4 | Not readable |
| #2B4168 text on white | 10.20:1 | AAA | Lc 93.6 | Preferred for body text |
| #2B4168 text on black | 2.05:1 | Fails | Lc -9.0 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEE
oklch(88.5% 0.03 260.7)
-
Step 300
300
#ADC2E5
oklch(81% 0.055 260.6)
-
Step 400
400
#82A1D7
oklch(70.6% 0.087 261.3)
-
Step 500
500
#6389CD
oklch(63.1% 0.112 261.5)
-
Step 600
600
#4972BA
oklch(55.6% 0.122 260.9)
-
Step 700
700
#3B5FA0
oklch(49.1% 0.113 261.3)
-
Step 800
800
#314E82
oklch(42.8% 0.093 261.3)
-
Step 900
900 (this color)
#2B4168
oklch(37.7% 0.073 261.2)
-
Step 950
950
#19263D
oklch(26.9% 0.047 261.3)
#2B4168 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) | #31446A | 0.013 |
| Deuteranopia (no green cones) | #2A3E67 | 0.009 |
| Tritanopia (no blue cones) | #054A4F | 0.066 |
| Achromatopsia (no color) | #414141 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4168
#2B4168
oklch(37.7% 0.073 261.2)
- #553D08
#553D08
oklch(37.7% 0.073 81.5)
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 #2B4168, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.031
- Twilight Blue #0A437A ΔE 0.038
- Charcoal #264653 ΔE 0.045
- Marine Blue #01386A ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.052
- Light Navy #155084 ΔE 0.058
- Midnight Green #073B4C ΔE 0.064
Use #2B4168 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.