#2B447D
Closest named color: Twilight Blue (#0A437A). oklch(39.8% 0.101 264.5), rgb(43, 68, 125).
Aa
White text reads best on this color (9.43:1).
About this color
#2B447D is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.101 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.028 away. White text reads best on it, at 9.43:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.22:1 |
| White text | 9.43:1 |
Values
| HEX | #2B447D |
| RGB | rgb(43, 68, 125) |
| HSL | hsl(222, 49%, 33%) |
| OKLCH | oklch(39.8% 0.101 264.5) |
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 #2B447D | 9.43:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #2B447D | 2.22:1 | Fails | Lc 12.4 | Not readable |
| #2B447D text on white | 9.43:1 | AAA | Lc 91.6 | Preferred for body text |
| #2B447D text on black | 2.22:1 | Fails | Lc -10.8 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CBD9F6
oklch(88.4% 0.043 265)
-
Step 300
300
#A8C1F3
oklch(81% 0.076 264)
-
Step 400
400
#7A9FEC
oklch(70.7% 0.121 264)
-
Step 500
500
#5985E6
oklch(63.2% 0.154 264.1)
-
Step 600
600
#406CD5
oklch(55.7% 0.169 264.5)
-
Step 700
700
#3259B8
oklch(49% 0.157 264.5)
-
Step 800
800
#2A4A95
oklch(42.8% 0.129 264.3)
-
Step 900
900 (this color)
#2B447D
oklch(39.8% 0.101 264.5)
-
Step 950
950
#162545
oklch(27% 0.063 263.8)
#2B447D 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) | #294A7F | 0.017 |
| Deuteranopia (no green cones) | #1C437C | 0.016 |
| Tritanopia (no blue cones) | #00515A | 0.086 |
| Achromatopsia (no color) | #464646 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B447D
#2B447D
oklch(39.8% 0.101 264.5)
- #5B4300
#5B4300
oklch(39.8% 0.082 85.3)
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 #2B447D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.028
- Cobalt #1E488F ΔE 0.032
- Light Navy #155084 ΔE 0.036
- Dusk Blue #26538D ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.051
- Blueberry #464196 ΔE 0.058
- Dark Grey Blue #29465B ΔE 0.061
Use #2B447D 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.