#2A5D9B
Closest named color: Denim Blue (#3B5B92). oklch(47.6% 0.114 254.9), rgb(42, 93, 155).
Aa
White text reads best on this color (6.69:1).
About this color
#2A5D9B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.114 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.020 away. White text reads best on it, at 6.69:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.13:1 |
| White text | 6.69:1 |
Values
| HEX | #2A5D9B |
| RGB | rgb(42, 93, 155) |
| HSL | hsl(213, 57%, 39%) |
| OKLCH | oklch(47.6% 0.114 254.9) |
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 #2A5D9B | 6.69:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #2A5D9B | 3.13:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #2A5D9B text on white | 6.69:1 | AA | Lc 82.7 | Fine for body text |
| #2A5D9B text on black | 3.13:1 | AA large text | Lc -19.2 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBEE
oklch(88.6% 0.031 254.3)
-
Step 300
300
#A9C3E4
oklch(80.9% 0.055 254.5)
-
Step 400
400
#7BA3D7
oklch(70.6% 0.088 255.3)
-
Step 500
500
#588CCD
oklch(63.2% 0.113 254.7)
-
Step 600
600
#3D75BA
oklch(55.7% 0.123 254.8)
-
Step 700
700 (this color)
#2A5D9B
oklch(47.6% 0.114 254.9)
-
Step 800
800
#275082
oklch(42.7% 0.095 254.7)
-
Step 900
900
#254368
oklch(37.8% 0.073 254.6)
-
Step 950
950
#16273D
oklch(27% 0.047 255.4)
#2A5D9B 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) | #40629D | 0.028 |
| Deuteranopia (no green cones) | #2F579A | 0.017 |
| Tritanopia (no blue cones) | #006B74 | 0.088 |
| Achromatopsia (no color) | #5C5C5C | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A5D9B
#2A5D9B
oklch(47.6% 0.114 254.9)
- #7D5300
#7D5300
oklch(47.7% 0.1 75.2)
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 #2A5D9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.020
- Light Navy Blue #2E5A88 ΔE 0.030
- Dusky Blue #475F94 ΔE 0.034
- Dusk Blue #26538D ΔE 0.035
- Peacock Blue #016795 ΔE 0.036
- Denim #3B638C ΔE 0.037
- Mid Blue #276AB3 ΔE 0.048
- Twilight #4E518B ΔE 0.052
Use #2A5D9B 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.