#2B5873
Closest named color: YInMn Blue (#415A77). oklch(44.1% 0.067 237.3), rgb(43, 88, 115).
Aa
White text reads best on this color (7.64:1).
About this color
#2B5873 is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.067 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.027 away. White text reads best on it, at 7.64:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.74:1 |
| White text | 7.64:1 |
Values
| HEX | #2B5873 |
| RGB | rgb(43, 88, 115) |
| HSL | hsl(203, 46%, 31%) |
| OKLCH | oklch(44.1% 0.067 237.3) |
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 #2B5873 | 7.64:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #2B5873 | 2.74:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #2B5873 text on white | 7.64:1 | AAA | Lc 86.4 | Fine for body text |
| #2B5873 text on black | 2.74:1 | Fails | Lc -15.7 | 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 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#AAC5D7
oklch(80.9% 0.039 237.2)
-
Step 400
400
#7CA7C3
oklch(70.7% 0.062 237.3)
-
Step 500
500
#5891B4
oklch(63.1% 0.08 236.9)
-
Step 600
600
#3C7BA0
oklch(55.7% 0.087 236.9)
-
Step 700
700
#2E6789
oklch(49.1% 0.081 237.7)
-
Step 800
800 (this color)
#2B5873
oklch(44.1% 0.067 237.3)
-
Step 900
900
#25465A
oklch(37.8% 0.052 236.9)
-
Step 950
950
#162935
oklch(27.1% 0.033 237.5)
#2B5873 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) | #4B5874 | 0.038 |
| Deuteranopia (no green cones) | #425073 | 0.034 |
| Tritanopia (no blue cones) | #005F61 | 0.049 |
| Achromatopsia (no color) | #535353 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5873
#2B5873
oklch(44.1% 0.067 237.3)
- #6F492C
#6F492C
oklch(44.1% 0.067 57.2)
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 #2B5873, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.035
- Petrol #005F6A ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.039
- Light Navy #155084 ΔE 0.046
- Dusk Blue #26538D ΔE 0.050
- Dusty Grape #545775 ΔE 0.052
- Deep Teal #00555A ΔE 0.052
Use #2B5873 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.