#2B436D
Closest named color: Twilight Blue (#0A437A). oklch(38.5% 0.078 260.9), rgb(43, 67, 109).
Aa
White text reads best on this color (9.87:1).
About this color
#2B436D is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.078 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.033 away. White text reads best on it, at 9.87:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.12:1 |
| White text | 9.87:1 |
Values
| HEX | #2B436D |
| RGB | rgb(43, 67, 109) |
| HSL | hsl(218, 43%, 30%) |
| OKLCH | oklch(38.5% 0.078 260.9) |
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 #2B436D | 9.87:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #2B436D | 2.12:1 | Fails | Lc 11.2 | Not readable |
| #2B436D text on white | 9.87:1 | AAA | Lc 92.8 | Preferred for body text |
| #2B436D 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
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#ACC2E7
oklch(81% 0.058 260.8)
-
Step 400
400
#7FA1DB
oklch(70.6% 0.094 260.8)
-
Step 500
500
#5F89D1
oklch(63.1% 0.119 260.7)
-
Step 600
600
#4671BF
oklch(55.6% 0.131 261.4)
-
Step 700
700
#375FA4
oklch(49.2% 0.12 260.6)
-
Step 800
800
#2E4E85
oklch(42.8% 0.099 260.5)
-
Step 900
900 (this color)
#2B436D
oklch(38.5% 0.078 260.9)
-
Step 950
950
#18263E
oklch(26.9% 0.049 260.7)
#2B436D 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) | #32466F | 0.014 |
| Deuteranopia (no green cones) | #29406C | 0.010 |
| Tritanopia (no blue cones) | #004C52 | 0.069 |
| Achromatopsia (no color) | #434343 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B436D
#2B436D
oklch(38.5% 0.078 260.9)
- #593E02
#593E02
oklch(38.4% 0.078 80.3)
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 #2B436D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.035
- Light Navy #155084 ΔE 0.049
- Charcoal #264653 ΔE 0.050
- Marine Blue #01386A ΔE 0.053
- Cobalt #1E488F ΔE 0.057
- Deep Sea Blue #015482 ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.058
Use #2B436D 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.