#143E52
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.5% 0.058 232.7), rgb(20, 62, 82).
Aa
White text reads best on this color (11.40:1).
About this color
#143E52 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.058 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.014 away. White text reads best on it, at 11.40:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.84:1 |
| White text | 11.40:1 |
Values
| HEX | #143E52 |
| RGB | rgb(20, 62, 82) |
| HSL | hsl(199, 61%, 20%) |
| OKLCH | oklch(34.5% 0.058 232.7) |
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 #143E52 | 11.40:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #143E52 | 1.84:1 | Fails | Lc 7.8 | Not readable |
| #143E52 text on white | 11.40:1 | AAA | Lc 96.1 | Preferred for body text |
| #143E52 text on black | 1.84:1 | Fails | Lc 0.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A6C6D8
oklch(80.9% 0.043 232.7)
-
Step 400
400
#74A9C5
oklch(70.8% 0.069 232.1)
-
Step 500
500
#4D93B6
oklch(63.2% 0.088 232.2)
-
Step 600
600
#2C7CA2
oklch(55.5% 0.096 233.1)
-
Step 700
700
#1D698B
oklch(49.2% 0.089 232.6)
-
Step 800
800
#1B5671
oklch(42.8% 0.074 232.3)
-
Step 900
900 (this color)
#143E52
oklch(34.5% 0.058 232.7)
-
Step 950
950
#122935
oklch(26.8% 0.037 233.2)
#143E52 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) | #343D53 | 0.037 |
| Deuteranopia (no green cones) | #2C3752 | 0.033 |
| Tritanopia (no blue cones) | #004345 | 0.035 |
| Achromatopsia (no color) | #3A3A3A | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #143E52
#143E52
oklch(34.5% 0.058 232.7)
- #50301B
#50301B
oklch(34.4% 0.057 53)
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 #143E52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.014
- Midnight Green #073B4C ΔE 0.017
- Prussian Blue #1D3557 ΔE 0.033
- Charcoal #264653 ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.038
- Onyx #343A40 ΔE 0.045
- Gunmetal #293241 ΔE 0.045
- Marine Blue #01386A ΔE 0.051
Use #143E52 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.