#2B5988
Closest named color: Light Navy Blue (#2E5A88). oklch(45.5% 0.092 251), rgb(43, 89, 136).
Aa
White text reads best on this color (7.27:1).
About this color
#2B5988 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.092 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.004 away. White text reads best on it, at 7.27:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #2B5988 |
| RGB | rgb(43, 89, 136) |
| HSL | hsl(210, 52%, 35%) |
| OKLCH | oklch(45.5% 0.092 251) |
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 #2B5988 | 7.27:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #2B5988 | 2.88:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #2B5988 text on white | 7.27:1 | AAA | Lc 85.0 | Fine for body text |
| #2B5988 text on black | 2.88:1 | Fails | Lc -17.0 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A7C4E3
oklch(80.9% 0.054 250.2)
-
Step 400
400
#78A5D5
oklch(70.8% 0.086 250.7)
-
Step 500
500
#538DCA
oklch(63% 0.111 251.1)
-
Step 600
600
#3676B7
oklch(55.5% 0.121 251.2)
-
Step 700
700
#28639D
oklch(49% 0.111 250.9)
-
Step 800
800 (this color)
#2B5988
oklch(45.5% 0.092 251)
-
Step 900
900
#224466
oklch(37.8% 0.071 250.2)
-
Step 950
950
#15283C
oklch(27.1% 0.045 250.9)
#2B5988 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) | #445B8A | 0.029 |
| Deuteranopia (no green cones) | #375387 | 0.020 |
| Tritanopia (no blue cones) | #00646A | 0.072 |
| Achromatopsia (no color) | #575757 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5988
#2B5988
oklch(45.5% 0.092 251)
- #764C0C
#764C0C
oklch(45.4% 0.092 70.8)
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 #2B5988, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.004
- Dusk Blue #26538D ΔE 0.022
- Denim Blue #3B5B92 ΔE 0.025
- Deep Sea Blue #015482 ΔE 0.032
- Light Navy #155084 ΔE 0.034
- Denim #3B638C ΔE 0.036
- YInMn Blue #415A77 ΔE 0.036
- Dusky Blue #475F94 ΔE 0.042
Use #2B5988 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.