#282F4F
Closest named color: Space Cadet (#2B2D42). oklch(31.5% 0.058 273.3), rgb(40, 47, 79).
Aa
White text reads best on this color (13.04:1).
About this color
#282F4F is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.058 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.023 away. White text reads best on it, at 13.04:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.60:1 |
| White text | 13.04:1 |
Values
| HEX | #282F4F |
| RGB | rgb(40, 47, 79) |
| HSL | hsl(229, 33%, 23%) |
| OKLCH | oklch(31.5% 0.058 273.3) |
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 #282F4F | 13.04:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #282F4F | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #282F4F text on white | 13.04:1 | AAA | Lc 99.2 | Preferred for body text |
| #282F4F text on black | 1.60:1 | 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 950.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B2BEEE
oklch(80.9% 0.069 273.8)
-
Step 400
400
#8A9BE5
oklch(70.6% 0.11 273.4)
-
Step 500
500
#6F81DE
oklch(63.1% 0.141 273.5)
-
Step 600
600
#5868CB
oklch(55.5% 0.153 273.5)
-
Step 700
700
#4856B0
oklch(49% 0.143 273.3)
-
Step 800
800
#3B478F
oklch(42.7% 0.119 273.2)
-
Step 900
900
#323C72
oklch(37.6% 0.093 273.3)
-
Step 950
950 (this color)
#282F4F
oklch(31.5% 0.058 273.3)
#282F4F 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) | #233350 | 0.014 |
| Deuteranopia (no green cones) | #202F4E | 0.012 |
| Tritanopia (no blue cones) | #1A363B | 0.052 |
| Achromatopsia (no color) | #313131 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282F4F
#282F4F
oklch(31.5% 0.058 273.3)
- #3C3107
#3C3107
oklch(31.7% 0.059 93.6)
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 #282F4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.024
- Gunmetal #293241 ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.041
- Marine #042E60 ΔE 0.048
- Midnight Green #073B4C ΔE 0.049
- Oxford Blue #1B263B ΔE 0.049
- Onyx #343A40 ΔE 0.055
Use #282F4F 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.