#2B5384
Closest named color: Dusk Blue (#26538D). oklch(43.8% 0.093 254.6), rgb(43, 83, 132).
Aa
White text reads best on this color (7.85:1).
About this color
#2B5384 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.093 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.015 away. White text reads best on it, at 7.85:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.67:1 |
| White text | 7.85:1 |
Values
| HEX | #2B5384 |
| RGB | rgb(43, 83, 132) |
| HSL | hsl(213, 51%, 34%) |
| OKLCH | oklch(43.8% 0.093 254.6) |
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 #2B5384 | 7.85:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #2B5384 | 2.67:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #2B5384 text on white | 7.85:1 | AAA | Lc 87.0 | Fine for body text |
| #2B5384 text on black | 2.67:1 | Fails | Lc -15.1 | Dividers and decoration only |
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 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBED
oklch(88.6% 0.03 253)
-
Step 300
300
#A9C3E4
oklch(80.9% 0.055 254.5)
-
Step 400
400
#7BA3D6
oklch(70.6% 0.087 254.8)
-
Step 500
500
#598CCB
oklch(63.1% 0.11 254.4)
-
Step 600
600
#3D75B8
oklch(55.6% 0.12 254.3)
-
Step 700
700
#2F629F
oklch(49.2% 0.113 254.4)
-
Step 800
800 (this color)
#2B5384
oklch(43.8% 0.093 254.6)
-
Step 900
900
#254367
oklch(37.8% 0.072 254)
-
Step 950
950
#16273C
oklch(26.9% 0.046 254.4)
#2B5384 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) | #3E5686 | 0.025 |
| Deuteranopia (no green cones) | #314E83 | 0.015 |
| Tritanopia (no blue cones) | #005E65 | 0.074 |
| Achromatopsia (no color) | #525252 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5384
#2B5384
oklch(43.8% 0.093 254.6)
- #6F4900
#6F4900
oklch(43.7% 0.092 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 #2B5384, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.015
- Light Navy #155084 ΔE 0.021
- Light Navy Blue #2E5A88 ΔE 0.022
- Deep Sea Blue #015482 ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.037
- Cobalt #1E488F ΔE 0.043
- YInMn Blue #415A77 ΔE 0.043
- Dusk #4E5481 ΔE 0.044
Use #2B5384 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.