#2A5497
Closest named color: Dusk Blue (#26538D). oklch(45.2% 0.119 259.4), rgb(42, 84, 151).
Aa
White text reads best on this color (7.46:1).
About this color
#2A5497 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.119 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.017 away. White text reads best on it, at 7.46:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.81:1 |
| White text | 7.46:1 |
Values
| HEX | #2A5497 |
| RGB | rgb(42, 84, 151) |
| HSL | hsl(217, 56%, 38%) |
| OKLCH | oklch(45.2% 0.119 259.4) |
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 #2A5497 | 7.46:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #2A5497 | 2.81:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #2A5497 text on white | 7.46:1 | AAA | Lc 85.6 | Fine for body text |
| #2A5497 text on black | 2.81:1 | Fails | Lc -16.4 | 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 800.
-
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
#CADAF3
oklch(88.4% 0.039 259.3)
-
Step 300
300
#A6C2EE
oklch(80.9% 0.07 259.3)
-
Step 400
400
#76A1E6
oklch(70.6% 0.112 259.6)
-
Step 500
500
#5288DF
oklch(63% 0.144 259.5)
-
Step 600
600
#3670CC
oklch(55.5% 0.155 259.3)
-
Step 700
700
#295EB1
oklch(49.2% 0.144 259.2)
-
Step 800
800 (this color)
#2A5497
oklch(45.2% 0.119 259.4)
-
Step 900
900
#214172
oklch(37.8% 0.092 258.7)
-
Step 950
950
#142643
oklch(27% 0.059 259.5)
#2A5497 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) | #335A9A | 0.021 |
| Deuteranopia (no green cones) | #205096 | 0.016 |
| Tritanopia (no blue cones) | #00646E | 0.095 |
| Achromatopsia (no color) | #555555 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A5497
#2A5497
oklch(45.2% 0.119 259.4)
- #714F00
#714F00
oklch(45.3% 0.094 80)
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 #2A5497, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.017
- Denim Blue #3B5B92 ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.033
- Light Navy #155084 ΔE 0.038
- Cobalt #1E488F ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.044
- Twilight #4E518B ΔE 0.046
- Dusky Blue #475F94 ΔE 0.049
Use #2A5497 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.