#2B4361
Closest named color: Dark Grey Blue (#29465B). oklch(37.8% 0.06 254.6), rgb(43, 67, 97).
Aa
White text reads best on this color (10.10:1).
About this color
#2B4361 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.060 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.016 away. White text reads best on it, at 10.10:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.07:1 |
| White text | 10.10:1 |
Values
| HEX | #2B4361 |
| RGB | rgb(43, 67, 97) |
| HSL | hsl(213, 39%, 27%) |
| OKLCH | oklch(37.8% 0.06 254.6) |
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 #2B4361 | 10.10:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #2B4361 | 2.07:1 | Fails | Lc 10.6 | Not readable |
| #2B4361 text on white | 10.10:1 | AAA | Lc 93.4 | Preferred for body text |
| #2B4361 text on black | 2.07:1 | Fails | Lc -9.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEA
oklch(88.4% 0.026 255.6)
-
Step 300
300
#ADC3DE
oklch(80.9% 0.045 253.6)
-
Step 400
400
#82A3CD
oklch(70.6% 0.072 254.7)
-
Step 500
500
#628CC0
oklch(63.1% 0.092 254.3)
-
Step 600
600
#4975AD
oklch(55.6% 0.1 255.1)
-
Step 700
700
#3A6294
oklch(49% 0.093 254.8)
-
Step 800
800
#305078
oklch(42.6% 0.077 254.7)
-
Step 900
900 (this color)
#2B4361
oklch(37.8% 0.06 254.6)
-
Step 950
950
#192739
oklch(26.9% 0.039 255.1)
#2B4361 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) | #374562 | 0.018 |
| Deuteranopia (no green cones) | #303F60 | 0.013 |
| Tritanopia (no blue cones) | #0F4A4E | 0.052 |
| Achromatopsia (no color) | #424242 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4361
#2B4361
oklch(37.8% 0.06 254.6)
- #543D1A
#543D1A
oklch(37.8% 0.06 75.6)
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 #2B4361, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.016
- Charcoal #264653 ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.044
- Twilight Blue #0A437A ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.055
- Marine Blue #01386A ΔE 0.057
- Midnight Green #073B4C ΔE 0.057
Use #2B4361 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.