#2A5AAB
Closest named color: Denim Blue (#3B5B92). oklch(47.9% 0.14 260.2), rgb(42, 90, 171).
Aa
White text reads best on this color (6.66:1).
About this color
#2A5AAB is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.140 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.043 away. White text reads best on it, at 6.66:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.14:1 |
| White text | 6.66:1 |
Values
| HEX | #2A5AAB |
| RGB | rgb(42, 90, 171) |
| HSL | hsl(218, 61%, 42%) |
| OKLCH | oklch(47.9% 0.14 260.2) |
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 #2A5AAB | 6.66:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #2A5AAB | 3.14:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #2A5AAB text on white | 6.66:1 | AA | Lc 82.6 | Fine for body text |
| #2A5AAB text on black | 3.14:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A8C2ED
oklch(80.9% 0.067 260.4)
-
Step 400
400
#79A1E4
oklch(70.7% 0.108 260.4)
-
Step 500
500
#5688DC
oklch(63% 0.138 260.2)
-
Step 600
600
#3B70CA
oklch(55.6% 0.151 260.3)
-
Step 700
700 (this color)
#2A5AAB
oklch(47.9% 0.14 260.2)
-
Step 800
800
#264D8D
oklch(42.7% 0.115 259.8)
-
Step 900
900
#244071
oklch(37.6% 0.091 260.8)
-
Step 950
950
#152642
oklch(27% 0.057 259.9)
#2A5AAB 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) | #2E62AE | 0.023 |
| Deuteranopia (no green cones) | #0C57A9 | 0.021 |
| Tritanopia (no blue cones) | #006D7A | 0.110 |
| Achromatopsia (no color) | #5C5C5C | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A5AAB
#2A5AAB
oklch(47.9% 0.14 260.2)
- #7A5600
#7A5600
oklch(47.9% 0.099 80.4)
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 #2A5AAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.043
- Mid Blue #276AB3 ΔE 0.044
- Dusk Blue #26538D ΔE 0.051
- Dusky Blue #475F94 ΔE 0.052
- French Blue #436BAD ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.057
- Peacock Blue #016795 ΔE 0.058
- Denim #3B638C ΔE 0.063
Use #2A5AAB 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.