#2B6591
Closest named color: Denim (#3B638C). oklch(48.9% 0.093 244.4), rgb(43, 101, 145).
Aa
White text reads best on this color (6.22:1).
About this color
#2B6591 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.093 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.015 away. White text reads best on it, at 6.22:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.37:1 |
| White text | 6.22:1 |
Values
| HEX | #2B6591 |
| RGB | rgb(43, 101, 145) |
| HSL | hsl(206, 54%, 37%) |
| OKLCH | oklch(48.9% 0.093 244.4) |
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 #2B6591 | 6.22:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #2B6591 | 3.37:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #2B6591 text on white | 6.22:1 | AA | Lc 80.8 | Fine for body text |
| #2B6591 text on black | 3.37:1 | AA large text | Lc -21.1 | 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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#A9C4DC
oklch(80.8% 0.045 245.2)
-
Step 400
400
#7AA6CB
oklch(70.7% 0.072 244.4)
-
Step 500
500
#568FBD
oklch(63% 0.092 244.4)
-
Step 600
600
#3A79AA
oklch(55.7% 0.1 244.5)
-
Step 700
700 (this color)
#2B6591
oklch(48.9% 0.093 244.4)
-
Step 800
800
#255376
oklch(42.7% 0.077 244.1)
-
Step 900
900
#24455F
oklch(37.8% 0.059 244.1)
-
Step 950
950
#162838
oklch(26.9% 0.038 246.6)
#2B6591 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) | #516693 | 0.041 |
| Deuteranopia (no green cones) | #435C90 | 0.033 |
| Tritanopia (no blue cones) | #007074 | 0.069 |
| Achromatopsia (no color) | #616161 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B6591
#2B6591
oklch(48.9% 0.093 244.4)
- #84541F
#84541F
oklch(49% 0.093 64.8)
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 #2B6591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.015
- Peacock Blue #016795 ΔE 0.019
- Denim Blue #3B5B92 ΔE 0.031
- Dusky Blue #475F94 ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.033
- Ocean Blue #03719C ΔE 0.036
- Muted Blue #3B719F ΔE 0.043
- Sea Blue #047495 ΔE 0.044
Use #2B6591 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.