#2B4772
Closest named color: Twilight Blue (#0A437A). oklch(39.8% 0.081 258.7), rgb(43, 71, 114).
Aa
White text reads best on this color (9.34:1).
About this color
#2B4772 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.081 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.034 away. White text reads best on it, at 9.34:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #2B4772 |
| RGB | rgb(43, 71, 114) |
| HSL | hsl(216, 45%, 31%) |
| OKLCH | oklch(39.8% 0.081 258.7) |
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 #2B4772 | 9.34:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #2B4772 | 2.24:1 | Fails | Lc 12.5 | Not readable |
| #2B4772 text on white | 9.34:1 | AAA | Lc 91.4 | Preferred for body text |
| #2B4772 text on black | 2.24:1 | Fails | Lc -10.9 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A9C2E8
oklch(80.8% 0.061 258.7)
-
Step 400
400
#7BA2DD
oklch(70.7% 0.097 258.5)
-
Step 500
500
#598AD4
oklch(63.2% 0.124 258.4)
-
Step 600
600
#3F72C1
oklch(55.6% 0.135 258.9)
-
Step 700
700
#315FA6
oklch(49% 0.125 258.9)
-
Step 800
800
#294E87
oklch(42.7% 0.104 258.8)
-
Step 900
900 (this color)
#2B4772
oklch(39.8% 0.081 258.7)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#2B4772 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) | #354A74 | 0.017 |
| Deuteranopia (no green cones) | #2C4471 | 0.009 |
| Tritanopia (no blue cones) | #005157 | 0.070 |
| Achromatopsia (no color) | #474747 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4772
#2B4772
oklch(39.8% 0.081 258.7)
- #5E4103
#5E4103
oklch(39.8% 0.081 79.2)
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 #2B4772, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.034
- Light Navy #155084 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.045
- Cobalt #1E488F ΔE 0.049
- Dusk Blue #26538D ΔE 0.052
- Charcoal #264653 ΔE 0.054
- Marine Blue #01386A ΔE 0.063
Use #2B4772 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.