#2B5CAB
Closest named color: Mid Blue (#276AB3). oklch(48.4% 0.137 259.6), rgb(43, 92, 171).
Aa
White text reads best on this color (6.51:1).
About this color
#2B5CAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.137 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.039 away. White text reads best on it, at 6.51:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.22:1 |
| White text | 6.51:1 |
Values
| HEX | #2B5CAB |
| RGB | rgb(43, 92, 171) |
| HSL | hsl(217, 60%, 42%) |
| OKLCH | oklch(48.4% 0.137 259.6) |
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 #2B5CAB | 6.51:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #2B5CAB | 3.22:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #2B5CAB text on white | 6.51:1 | AA | Lc 81.9 | Fine for body text |
| #2B5CAB text on black | 3.22:1 | AA large text | Lc -19.9 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A8C2EC
oklch(80.9% 0.066 259.9)
-
Step 400
400
#79A1E3
oklch(70.6% 0.107 260.1)
-
Step 500
500
#5689DB
oklch(63.2% 0.136 259.5)
-
Step 600
600
#3B71C8
oklch(55.6% 0.147 259.5)
-
Step 700
700 (this color)
#2B5CAB
oklch(48.4% 0.137 259.6)
-
Step 800
800
#264D8C
oklch(42.7% 0.114 259.6)
-
Step 900
900
#244170
oklch(37.8% 0.088 259.6)
-
Step 950
950
#152642
oklch(27% 0.057 259.9)
#2B5CAB 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) | #3364AE | 0.025 |
| Deuteranopia (no green cones) | #1658A9 | 0.020 |
| Tritanopia (no blue cones) | #006F7B | 0.108 |
| Achromatopsia (no color) | #5E5E5E | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5CAB
#2B5CAB
oklch(48.4% 0.137 259.6)
- #7C5700
#7C5700
oklch(48.4% 0.1 80)
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 #2B5CAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.049
- French Blue #436BAD ΔE 0.051
- Dusk Blue #26538D ΔE 0.053
- Peacock Blue #016795 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.056
- Denim #3B638C ΔE 0.060
Use #2B5CAB 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.