#2B6381
Closest named color: Denim (#3B638C). oklch(47.6% 0.076 235), rgb(43, 99, 129).
Aa
White text reads best on this color (6.55:1).
About this color
#2B6381 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.076 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.025 away. White text reads best on it, at 6.55:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #2B6381 |
| RGB | rgb(43, 99, 129) |
| HSL | hsl(201, 50%, 34%) |
| OKLCH | oklch(47.6% 0.076 235) |
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 #2B6381 | 6.55:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #2B6381 | 3.20:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #2B6381 text on white | 6.55:1 | AA | Lc 82.2 | Fine for body text |
| #2B6381 text on black | 3.20:1 | AA large text | Lc -19.7 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE5
oklch(88.6% 0.02 233.9)
-
Step 300
300
#ABC5D5
oklch(80.9% 0.036 234.9)
-
Step 400
400
#7DA7C0
oklch(70.7% 0.058 234.8)
-
Step 500
500
#5A91B1
oklch(63.1% 0.076 235.3)
-
Step 600
600
#3E7B9C
oklch(55.6% 0.081 234.5)
-
Step 700
700 (this color)
#2B6381
oklch(47.6% 0.076 235)
-
Step 800
800
#29546D
oklch(42.6% 0.063 236.4)
-
Step 900
900
#264658
oklch(37.8% 0.049 234.7)
-
Step 950
950
#172933
oklch(27% 0.03 233.8)
#2B6381 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) | #556282 | 0.047 |
| Deuteranopia (no green cones) | #495A81 | 0.039 |
| Tritanopia (no blue cones) | #006B6D | 0.051 |
| Achromatopsia (no color) | #5D5D5D | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B6381
#2B6381
oklch(47.6% 0.076 235)
- #7D5031
#7D5031
oklch(47.5% 0.075 54.4)
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 #2B6381, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.025
- YInMn Blue #415A77 ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.032
- Peacock Blue #016795 ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.044
- Petrol #005F6A ΔE 0.047
- Dusky Blue #475F94 ΔE 0.047
- Slate #516572 ΔE 0.048
Use #2B6381 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.