#2A436E
Closest named color: Twilight Blue (#0A437A). oklch(38.5% 0.08 260.6), rgb(42, 67, 110).
Aa
White text reads best on this color (9.87:1).
About this color
#2A436E is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.080 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.031 away. White text reads best on it, at 9.87:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.12:1 |
| White text | 9.87:1 |
Values
| HEX | #2A436E |
| RGB | rgb(42, 67, 110) |
| HSL | hsl(218, 45%, 30%) |
| OKLCH | oklch(38.5% 0.08 260.6) |
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 #2A436E | 9.87:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #2A436E | 2.12:1 | Fails | Lc 11.2 | Not readable |
| #2A436E text on white | 9.87:1 | AAA | Lc 92.8 | Preferred for body text |
| #2A436E text on black | 2.12:1 | Fails | Lc -9.7 | Not readable |
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 900.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF0
oklch(88.5% 0.033 261)
-
Step 300
300
#ABC2E8
oklch(81% 0.06 260.4)
-
Step 400
400
#7EA1DD
oklch(70.7% 0.097 260.9)
-
Step 500
500
#5D89D3
oklch(63.1% 0.122 260.3)
-
Step 600
600
#4471C0
oklch(55.5% 0.133 260.8)
-
Step 700
700
#355FA6
oklch(49.2% 0.123 260.2)
-
Step 800
800
#2D4D87
oklch(42.6% 0.104 261.3)
-
Step 900
900 (this color)
#2A436E
oklch(38.5% 0.08 260.6)
-
Step 950
950
#18263F
oklch(27% 0.051 261.4)
#2A436E 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) | #314770 | 0.016 |
| Deuteranopia (no green cones) | #28406D | 0.010 |
| Tritanopia (no blue cones) | #004D53 | 0.070 |
| Achromatopsia (no color) | #434343 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A436E
#2A436E
oklch(38.5% 0.08 260.6)
- #593E00
#593E00
oklch(38.4% 0.079 80.8)
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 #2A436E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.037
- Light Navy #155084 ΔE 0.048
- Charcoal #264653 ΔE 0.051
- Marine Blue #01386A ΔE 0.052
- Cobalt #1E488F ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.059
Use #2A436E 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.