#2B588F
Closest named color: Light Navy Blue (#2E5A88). oklch(45.7% 0.103 254.8), rgb(43, 88, 143).
Aa
White text reads best on this color (7.25:1).
About this color
#2B588F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.103 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.014 away. White text reads best on it, at 7.25:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.89:1 |
| White text | 7.25:1 |
Values
| HEX | #2B588F |
| RGB | rgb(43, 88, 143) |
| HSL | hsl(213, 54%, 36%) |
| OKLCH | oklch(45.7% 0.103 254.8) |
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 #2B588F | 7.25:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #2B588F | 2.89:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #2B588F text on white | 7.25:1 | AAA | Lc 84.9 | Fine for body text |
| #2B588F text on black | 2.89:1 | Fails | Lc -17.1 | 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 800.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A7C3E8
oklch(80.9% 0.061 255.5)
-
Step 400
400
#77A3DC
oklch(70.6% 0.097 255.2)
-
Step 500
500
#538BD2
oklch(63% 0.123 255.1)
-
Step 600
600
#3674BF
oklch(55.5% 0.133 254.8)
-
Step 700
700
#2861A5
oklch(49.1% 0.124 254.8)
-
Step 800
800 (this color)
#2B588F
oklch(45.7% 0.103 254.8)
-
Step 900
900
#21426B
oklch(37.6% 0.081 254.9)
-
Step 950
950
#14273F
oklch(27% 0.052 255)
#2B588F 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) | #3F5C91 | 0.026 |
| Deuteranopia (no green cones) | #31528E | 0.017 |
| Tritanopia (no blue cones) | #00656C | 0.082 |
| Achromatopsia (no color) | #575757 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B588F
#2B588F
oklch(45.7% 0.103 254.8)
- #764E00
#764E00
oklch(45.7% 0.096 75.1)
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 #2B588F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.014
- Dusk Blue #26538D ΔE 0.016
- Denim Blue #3B5B92 ΔE 0.020
- Light Navy #155084 ΔE 0.035
- Deep Sea Blue #015482 ΔE 0.036
- Denim #3B638C ΔE 0.040
- Dusky Blue #475F94 ΔE 0.040
- Twilight #4E518B ΔE 0.044
Use #2B588F 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.