#2A57AE
Closest named color: Denim Blue (#3B5B92). oklch(47.5% 0.148 261.9), rgb(42, 87, 174).
Aa
White text reads best on this color (6.83:1).
About this color
#2A57AE is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.148 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.051 away. White text reads best on it, at 6.83:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #2A57AE |
| RGB | rgb(42, 87, 174) |
| HSL | hsl(220, 61%, 42%) |
| OKLCH | oklch(47.5% 0.148 261.9) |
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 #2A57AE | 6.83:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #2A57AE | 3.07:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #2A57AE text on white | 6.83:1 | AA | Lc 83.2 | Fine for body text |
| #2A57AE text on black | 3.07:1 | AA large text | Lc -18.8 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A8C1F0
oklch(80.9% 0.072 262.9)
-
Step 400
400
#79A0E8
oklch(70.7% 0.115 262.1)
-
Step 500
500
#5787E1
oklch(63.2% 0.146 261.9)
-
Step 600
600
#3C6ECF
oklch(55.5% 0.16 262.1)
-
Step 700
700 (this color)
#2A57AE
oklch(47.5% 0.148 261.9)
-
Step 800
800
#274B91
oklch(42.6% 0.123 262.1)
-
Step 900
900
#244074
oklch(37.8% 0.095 261.6)
-
Step 950
950
#152644
oklch(27.1% 0.061 261)
#2A57AE 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) | #2361B1 | 0.027 |
| Deuteranopia (no green cones) | #0055AC | 0.024 |
| Tritanopia (no blue cones) | #006C7A | 0.117 |
| Achromatopsia (no color) | #5B5B5B | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A57AE
#2A57AE
oklch(47.5% 0.148 261.9)
- #775600
#775600
oklch(47.5% 0.098 82.7)
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 #2A57AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.051
- Mid Blue #276AB3 ΔE 0.052
- Dusk Blue #26538D ΔE 0.054
- Dusky Blue #475F94 ΔE 0.060
- Light Navy Blue #2E5A88 ΔE 0.064
- Cobalt #1E488F ΔE 0.065
- French Blue #436BAD ΔE 0.065
- Blue Blue #2242C7 ΔE 0.066
Use #2A57AE 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.