#2B4768
Closest named color: Dark Grey Blue (#29465B). oklch(39.2% 0.066 253.4), rgb(43, 71, 104).
Aa
White text reads best on this color (9.52:1).
About this color
#2B4768 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.066 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 9.52:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.20:1 |
| White text | 9.52:1 |
Values
| HEX | #2B4768 |
| RGB | rgb(43, 71, 104) |
| HSL | hsl(212, 41%, 29%) |
| OKLCH | oklch(39.2% 0.066 253.4) |
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 #2B4768 | 9.52:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #2B4768 | 2.20:1 | Fails | Lc 12.0 | Not readable |
| #2B4768 text on white | 9.52:1 | AAA | Lc 91.9 | Preferred for body text |
| #2B4768 text on black | 2.20:1 | Fails | Lc -10.5 | 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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#ABC3E1
oklch(80.9% 0.05 254.1)
-
Step 400
400
#7EA4D1
oklch(70.8% 0.078 253.1)
-
Step 500
500
#5C8CC5
oklch(63% 0.101 253.5)
-
Step 600
600
#4176B2
oklch(55.7% 0.11 252.9)
-
Step 700
700
#336299
oklch(49% 0.103 253.7)
-
Step 800
800
#2B517C
oklch(42.8% 0.084 252.9)
-
Step 900
900 (this color)
#2B4768
oklch(39.2% 0.066 253.4)
-
Step 950
950
#17273A
oklch(26.8% 0.042 253.5)
#2B4768 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) | #3A4969 | 0.021 |
| Deuteranopia (no green cones) | #324367 | 0.014 |
| Tritanopia (no blue cones) | #024F53 | 0.058 |
| Achromatopsia (no color) | #454545 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4768
#2B4768
oklch(39.2% 0.066 253.4)
- #5B3F19
#5B3F19
oklch(39.1% 0.066 71.9)
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 #2B4768, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.037
- Twilight Blue #0A437A ΔE 0.044
- Light Navy #155084 ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.058
- Deep Teal #00555A ΔE 0.062
Use #2B4768 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.