#2A5EAB
Closest named color: Mid Blue (#276AB3). oklch(48.8% 0.135 258.4), rgb(42, 94, 171).
Aa
White text reads best on this color (6.38:1).
About this color
#2A5EAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.135 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.034 away. White text reads best on it, at 6.38:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.28:1 |
| White text | 6.38:1 |
Values
| HEX | #2A5EAB |
| RGB | rgb(42, 94, 171) |
| HSL | hsl(216, 61%, 42%) |
| OKLCH | oklch(48.8% 0.135 258.4) |
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 #2A5EAB | 6.38:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #2A5EAB | 3.28:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #2A5EAB text on white | 6.38:1 | AA | Lc 81.4 | Fine for body text |
| #2A5EAB text on black | 3.28:1 | AA large text | Lc -20.5 | 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
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A7C2EB
oklch(80.8% 0.065 258.6)
-
Step 400
400
#78A2E2
oklch(70.7% 0.105 258.6)
-
Step 500
500
#5489D9
oklch(63% 0.134 258.4)
-
Step 600
600
#3872C7
oklch(55.7% 0.145 258.1)
-
Step 700
700 (this color)
#2A5EAB
oklch(48.8% 0.135 258.4)
-
Step 800
800
#254E8B
oklch(42.8% 0.111 258.3)
-
Step 900
900
#22416F
oklch(37.6% 0.087 258.2)
-
Step 950
950
#152641
oklch(26.9% 0.056 259.3)
#2A5EAB 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) | #3765AE | 0.025 |
| Deuteranopia (no green cones) | #1D5AA9 | 0.016 |
| Tritanopia (no blue cones) | #00707C | 0.105 |
| Achromatopsia (no color) | #5F5F5F | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A5EAB
#2A5EAB
oklch(48.8% 0.135 258.4)
- #7F5700
#7F5700
oklch(48.8% 0.102 77.8)
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 #2A5EAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.047
- French Blue #436BAD ΔE 0.047
- Peacock Blue #016795 ΔE 0.051
- Dusk Blue #26538D ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.056
- Denim #3B638C ΔE 0.057
Use #2A5EAB 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.