#2A5CA3
Closest named color: Denim Blue (#3B5B92). oklch(47.8% 0.127 257.6), rgb(42, 92, 163).
Aa
White text reads best on this color (6.64:1).
About this color
#2A5CA3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.127 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.030 away. White text reads best on it, at 6.64:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #2A5CA3 |
| RGB | rgb(42, 92, 163) |
| HSL | hsl(215, 59%, 40%) |
| OKLCH | oklch(47.8% 0.127 257.6) |
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 #2A5CA3 | 6.64:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #2A5CA3 | 3.15:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #2A5CA3 text on white | 6.64:1 | AA | Lc 82.5 | Fine for body text |
| #2A5CA3 text on black | 3.15:1 | AA large text | Lc -19.4 | 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
#7AA2DD
oklch(70.6% 0.098 258)
-
Step 500
500
#578AD4
oklch(63.1% 0.125 257.7)
-
Step 600
600
#3C73C1
oklch(55.7% 0.135 257.5)
-
Step 700
700 (this color)
#2A5CA3
oklch(47.8% 0.127 257.6)
-
Step 800
800
#274E87
oklch(42.6% 0.105 258)
-
Step 900
900
#24426C
oklch(37.8% 0.081 257.1)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#2A5CA3 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) | #3962A6 | 0.024 |
| Deuteranopia (no green cones) | #2357A2 | 0.016 |
| Tritanopia (no blue cones) | #006D77 | 0.100 |
| Achromatopsia (no color) | #5C5C5C | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A5CA3
#2A5CA3
oklch(47.8% 0.127 257.6)
- #7C5500
#7C5500
oklch(48% 0.1 77.9)
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 #2A5CA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.030
- Dusky Blue #475F94 ΔE 0.041
- Dusk Blue #26538D ΔE 0.042
- Mid Blue #276AB3 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.043
- Peacock Blue #016795 ΔE 0.045
- Denim #3B638C ΔE 0.049
- French Blue #436BAD ΔE 0.053
Use #2A5CA3 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.