#2B5EA4
Closest named color: Denim Blue (#3B5B92). oklch(48.4% 0.125 257.1), rgb(43, 94, 164).
Aa
White text reads best on this color (6.48:1).
About this color
#2B5EA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.125 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.031 away. White text reads best on it, at 6.48:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.23:1 |
| White text | 6.48:1 |
Values
| HEX | #2B5EA4 |
| RGB | rgb(43, 94, 164) |
| HSL | hsl(215, 58%, 41%) |
| OKLCH | oklch(48.4% 0.125 257.1) |
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 #2B5EA4 | 6.48:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #2B5EA4 | 3.23:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #2B5EA4 text on white | 6.48:1 | AA | Lc 81.8 | Fine for body text |
| #2B5EA4 text on black | 3.23:1 | AA large text | Lc -20.1 | 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 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
#A8C3E8
oklch(81% 0.06 256.3)
-
Step 400
400
#79A3DD
oklch(70.8% 0.097 256.6)
-
Step 500
500
#568AD3
oklch(63% 0.124 257.1)
-
Step 600
600
#3B73C1
oklch(55.6% 0.135 257.2)
-
Step 700
700 (this color)
#2B5EA4
oklch(48.4% 0.125 257.1)
-
Step 800
800
#264F87
oklch(42.8% 0.104 256.9)
-
Step 900
900
#24426C
oklch(37.8% 0.081 257.1)
-
Step 950
950
#15273F
oklch(27% 0.051 256.1)
#2B5EA4 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) | #3C64A7 | 0.026 |
| Deuteranopia (no green cones) | #2759A3 | 0.015 |
| Tritanopia (no blue cones) | #006E79 | 0.097 |
| Achromatopsia (no color) | #5E5E5E | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5EA4
#2B5EA4
oklch(48.4% 0.125 257.1)
- #7E5600
#7E5600
oklch(48.4% 0.101 77.5)
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 #2B5EA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.031
- Mid Blue #276AB3 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.038
- Peacock Blue #016795 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.045
- Dusk Blue #26538D ΔE 0.046
- Denim #3B638C ΔE 0.047
- French Blue #436BAD ΔE 0.048
Use #2B5EA4 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.