#2B456A
Closest named color: Dark Grey Blue (#29465B). oklch(38.8% 0.071 257.3), rgb(43, 69, 106).
Aa
White text reads best on this color (9.71:1).
About this color
#2B456A is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.071 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 9.71:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.16:1 |
| White text | 9.71:1 |
Values
| HEX | #2B456A |
| RGB | rgb(43, 69, 106) |
| HSL | hsl(215, 42%, 29%) |
| OKLCH | oklch(38.8% 0.071 257.3) |
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 #2B456A | 9.71:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #2B456A | 2.16:1 | Fails | Lc 11.6 | Not readable |
| #2B456A text on white | 9.71:1 | AAA | Lc 92.4 | Preferred for body text |
| #2B456A text on black | 2.16:1 | Fails | Lc -10.0 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EAF4
oklch(93.5% 0.015 257.2)
-
Step 200
200
#CDDAED
oklch(88.4% 0.03 257.8)
-
Step 300
300
#ABC2E3
oklch(80.8% 0.053 257.4)
-
Step 400
400
#7FA3D6
oklch(70.8% 0.085 257.1)
-
Step 500
500
#5E8BCB
oklch(63.2% 0.109 257.3)
-
Step 600
600
#4474B8
oklch(55.7% 0.119 257.3)
-
Step 700
700
#35619E
oklch(49.1% 0.11 257)
-
Step 800
800
#2D4F80
oklch(42.7% 0.091 257.6)
-
Step 900
900 (this color)
#2B456A
oklch(38.8% 0.071 257.3)
-
Step 950
950
#18273C
oklch(27% 0.044 256.9)
#2B456A 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) | #36476C | 0.017 |
| Deuteranopia (no green cones) | #2E4169 | 0.012 |
| Tritanopia (no blue cones) | #004D52 | 0.063 |
| Achromatopsia (no color) | #444444 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B456A
#2B456A
oklch(38.8% 0.071 257.3)
- #593F10
#593F10
oklch(38.8% 0.071 78)
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 #2B456A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.028
- Twilight Blue #0A437A ΔE 0.039
- Charcoal #264653 ΔE 0.042
- Light Navy #155084 ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.055
- Marine Blue #01386A ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.060
Use #2B456A 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.