#2B4B95
Closest named color: Cobalt (#1E488F). oklch(43.1% 0.127 264.2), rgb(43, 75, 149).
Aa
White text reads best on this color (8.25:1).
About this color
#2B4B95 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.127 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.019 away. White text reads best on it, at 8.25:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.54:1 |
| White text | 8.25:1 |
Values
| HEX | #2B4B95 |
| RGB | rgb(43, 75, 149) |
| HSL | hsl(222, 55%, 38%) |
| OKLCH | oklch(43.1% 0.127 264.2) |
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 #2B4B95 | 8.25:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #2B4B95 | 2.54:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #2B4B95 text on white | 8.25:1 | AAA | Lc 88.2 | Fine for body text |
| #2B4B95 text on black | 2.54:1 | Fails | Lc -14.0 | 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 800.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CBDAF5
oklch(88.6% 0.041 262.3)
-
Step 300
300
#A8C1F2
oklch(80.9% 0.075 263.7)
-
Step 400
400
#7B9FEB
oklch(70.7% 0.119 264.3)
-
Step 500
500
#5A85E5
oklch(63.1% 0.152 264.3)
-
Step 600
600
#406CD3
oklch(55.5% 0.166 264.3)
-
Step 700
700
#325AB7
oklch(49.1% 0.154 264)
-
Step 800
800 (this color)
#2B4B95
oklch(43.1% 0.127 264.2)
-
Step 900
900
#263F76
oklch(37.8% 0.099 263.9)
-
Step 950
950
#162545
oklch(27% 0.063 263.8)
#2B4B95 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) | #225498 | 0.025 |
| Deuteranopia (no green cones) | #034A93 | 0.027 |
| Tritanopia (no blue cones) | #005C69 | 0.102 |
| Achromatopsia (no color) | #4E4E4E | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4B95
#2B4B95
oklch(43.1% 0.127 264.2)
- #674B00
#674B00
oklch(43.1% 0.089 83.9)
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 #2B4B95, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.019
- Dusk Blue #26538D ΔE 0.028
- Light Navy #155084 ΔE 0.038
- Blueberry #464196 ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.053
Use #2B4B95 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.