#2B4567
Closest named color: Dark Grey Blue (#29465B). oklch(38.6% 0.067 255.6), rgb(43, 69, 103).
Aa
White text reads best on this color (9.76:1).
About this color
#2B4567 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.067 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.022 away. White text reads best on it, at 9.76:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.14:1 |
| White text | 9.76:1 |
Values
| HEX | #2B4567 |
| RGB | rgb(43, 69, 103) |
| HSL | hsl(214, 41%, 29%) |
| OKLCH | oklch(38.6% 0.067 255.6) |
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 #2B4567 | 9.76:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #2B4567 | 2.14:1 | Fails | Lc 11.4 | Not readable |
| #2B4567 text on white | 9.76:1 | AAA | Lc 92.5 | Preferred for body text |
| #2B4567 text on black | 2.14:1 | Fails | Lc -9.9 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAEC
oklch(88.4% 0.029 256.5)
-
Step 300
300
#ACC3E1
oklch(81% 0.049 255.1)
-
Step 400
400
#7FA3D2
oklch(70.7% 0.08 255.3)
-
Step 500
500
#5F8CC6
oklch(63.2% 0.101 255.2)
-
Step 600
600
#4575B3
oklch(55.7% 0.11 255.5)
-
Step 700
700
#36629A
oklch(49.2% 0.103 255.3)
-
Step 800
800
#2D507D
oklch(42.7% 0.086 255.4)
-
Step 900
900 (this color)
#2B4567
oklch(38.6% 0.067 255.6)
-
Step 950
950
#18273B
oklch(27% 0.043 255.9)
#2B4567 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) | #374768 | 0.018 |
| Deuteranopia (no green cones) | #304166 | 0.013 |
| Tritanopia (no blue cones) | #054D51 | 0.060 |
| Achromatopsia (no color) | #444444 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4567
#2B4567
oklch(38.6% 0.067 255.6)
- #583E16
#583E16
oklch(38.5% 0.066 75)
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 #2B4567, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.022
- Charcoal #264653 ΔE 0.037
- Twilight Blue #0A437A ΔE 0.042
- Light Navy #155084 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.058
- Marine Blue #01386A ΔE 0.058
Use #2B4567 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.