#2B5593
Closest named color: Dusk Blue (#26538D). oklch(45.2% 0.112 258.1), rgb(43, 85, 147).
Aa
White text reads best on this color (7.43:1).
About this color
#2B5593 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.112 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.012 away. White text reads best on it, at 7.43:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.82:1 |
| White text | 7.43:1 |
Values
| HEX | #2B5593 |
| RGB | rgb(43, 85, 147) |
| HSL | hsl(216, 55%, 37%) |
| OKLCH | oklch(45.2% 0.112 258.1) |
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 #2B5593 | 7.43:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #2B5593 | 2.82:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #2B5593 text on white | 7.43:1 | AAA | Lc 85.6 | Fine for body text |
| #2B5593 text on black | 2.82:1 | Fails | Lc -16.5 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A7C2EB
oklch(80.8% 0.065 258.6)
-
Step 400
400
#77A2E2
oklch(70.7% 0.105 258.1)
-
Step 500
500
#5489D9
oklch(63% 0.134 258.4)
-
Step 600
600
#3872C7
oklch(55.7% 0.145 258.1)
-
Step 700
700
#2A5FAC
oklch(49.1% 0.135 258.1)
-
Step 800
800 (this color)
#2B5593
oklch(45.2% 0.112 258.1)
-
Step 900
900
#22416F
oklch(37.6% 0.087 258.2)
-
Step 950
950
#152641
oklch(26.9% 0.056 259.3)
#2B5593 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) | #385A95 | 0.021 |
| Deuteranopia (no green cones) | #275192 | 0.013 |
| Tritanopia (no blue cones) | #00636D | 0.088 |
| Achromatopsia (no color) | #555555 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5593
#2B5593
oklch(45.2% 0.112 258.1)
- #724E00
#724E00
oklch(45.2% 0.094 78.1)
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 #2B5593, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.012
- Light Navy Blue #2E5A88 ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.026
- Light Navy #155084 ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.039
- Cobalt #1E488F ΔE 0.041
- Twilight #4E518B ΔE 0.043
- Dusky Blue #475F94 ΔE 0.046
Use #2B5593 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.