#2B5DA5
Closest named color: Denim Blue (#3B5B92). oklch(48.2% 0.128 257.9), rgb(43, 93, 165).
Aa
White text reads best on this color (6.53:1).
About this color
#2B5DA5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.128 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.033 away. White text reads best on it, at 6.53:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.21:1 |
| White text | 6.53:1 |
Values
| HEX | #2B5DA5 |
| RGB | rgb(43, 93, 165) |
| HSL | hsl(215, 59%, 41%) |
| OKLCH | oklch(48.2% 0.128 257.9) |
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 #2B5DA5 | 6.53:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #2B5DA5 | 3.21:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #2B5DA5 text on white | 6.53:1 | AA | Lc 82.1 | Fine for body text |
| #2B5DA5 text on black | 3.21:1 | AA large text | Lc -19.8 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF6
oklch(93.7% 0.017 256.3)
-
Step 200
200
#CBDAF0
oklch(88.4% 0.034 257.9)
-
Step 300
300
#A8C2E9
oklch(80.8% 0.062 258.4)
-
Step 400
400
#79A2DE
oklch(70.6% 0.099 257.8)
-
Step 500
500
#578AD5
oklch(63.1% 0.126 257.9)
-
Step 600
600
#3B72C2
oklch(55.5% 0.138 257.9)
-
Step 700
700 (this color)
#2B5DA5
oklch(48.2% 0.128 257.9)
-
Step 800
800
#274E88
oklch(42.7% 0.106 258.3)
-
Step 900
900
#24426D
oklch(37.8% 0.082 257.5)
-
Step 950
950
#162740
oklch(27.2% 0.052 257.9)
#2B5DA5 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) | #3A64A8 | 0.026 |
| Deuteranopia (no green cones) | #2458A4 | 0.016 |
| Tritanopia (no blue cones) | #006E79 | 0.100 |
| Achromatopsia (no color) | #5D5D5D | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5DA5
#2B5DA5
oklch(48.2% 0.128 257.9)
- #7D5600
#7D5600
oklch(48.3% 0.101 78.2)
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 #2B5DA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.033
- Mid Blue #276AB3 ΔE 0.039
- Dusky Blue #475F94 ΔE 0.041
- Peacock Blue #016795 ΔE 0.046
- Dusk Blue #26538D ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.046
- Denim #3B638C ΔE 0.050
- French Blue #436BAD ΔE 0.050
Use #2B5DA5 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.