#2A55A7
Closest named color: Dusk Blue (#26538D). oklch(46.6% 0.141 261.8), rgb(42, 85, 167).
Aa
White text reads best on this color (7.10:1).
About this color
#2A55A7 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.141 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.043 away. White text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #2A55A7 |
| RGB | rgb(42, 85, 167) |
| HSL | hsl(219, 60%, 41%) |
| OKLCH | oklch(46.6% 0.141 261.8) |
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 #2A55A7 | 7.10:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #2A55A7 | 2.95:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #2A55A7 text on white | 7.10:1 | AAA | Lc 84.3 | Fine for body text |
| #2A55A7 text on black | 2.95:1 | Fails | Lc -17.7 | 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
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#A9C1ED
oklch(80.8% 0.068 262.5)
-
Step 400
400
#7BA0E5
oklch(70.6% 0.11 262.3)
-
Step 500
500
#5987DD
oklch(63% 0.14 261.9)
-
Step 600
600
#3F6FCB
oklch(55.6% 0.152 262)
-
Step 700
700 (this color)
#2A55A7
oklch(46.6% 0.141 261.8)
-
Step 800
800
#294C8E
oklch(42.7% 0.117 261.7)
-
Step 900
900
#254071
oklch(37.7% 0.09 261.4)
-
Step 950
950
#162642
oklch(27% 0.057 260.9)
#2A55A7 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) | #275EAA | 0.024 |
| Deuteranopia (no green cones) | #0053A5 | 0.024 |
| Tritanopia (no blue cones) | #006876 | 0.110 |
| Achromatopsia (no color) | #585858 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A55A7
#2A55A7
oklch(46.6% 0.141 261.8)
- #745300
#745300
oklch(46.5% 0.096 81.9)
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 #2A55A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.044
- Cobalt #1E488F ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.055
- Dusky Blue #475F94 ΔE 0.057
- Mid Blue #276AB3 ΔE 0.059
- Twilight #4E518B ΔE 0.060
- Blueberry #464196 ΔE 0.061
Use #2A55A7 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.