#283752
Closest named color: Prussian Blue (#1D3557). oklch(33.7% 0.052 261.7), rgb(40, 55, 82).
Aa
White text reads best on this color (11.94:1).
About this color
#283752 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.052 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.019 away. White text reads best on it, at 11.94:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.75:1 |
| White text | 11.94:1 |
Values
| HEX | #283752 |
| RGB | rgb(40, 55, 82) |
| HSL | hsl(219, 34%, 24%) |
| OKLCH | oklch(33.7% 0.052 261.7) |
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 #283752 | 11.94:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #283752 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #283752 text on white | 11.94:1 | AAA | Lc 97.3 | Preferred for body text |
| #283752 text on black | 1.75:1 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1DAE8
oklch(88.6% 0.022 259.2)
-
Step 300
300
#B3C1DA
oklch(80.8% 0.039 262.1)
-
Step 400
400
#8BA1C8
oklch(70.6% 0.063 261.8)
-
Step 500
500
#6F8ABA
oklch(63.2% 0.079 261.6)
-
Step 600
600
#5773A6
oklch(55.6% 0.086 261.9)
-
Step 700
700
#47608E
oklch(49% 0.08 262)
-
Step 800
800
#3A4F74
oklch(42.7% 0.067 261.3)
-
Step 900
900 (this color)
#283752
oklch(33.7% 0.052 261.7)
-
Step 950
950
#1D2737
oklch(27.1% 0.033 259.6)
#283752 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) | #2D3953 | 0.010 |
| Deuteranopia (no green cones) | #283551 | 0.006 |
| Tritanopia (no blue cones) | #173D41 | 0.046 |
| Achromatopsia (no color) | #373737 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283752
#283752
oklch(33.7% 0.052 261.7)
- #453415
#453415
oklch(33.7% 0.052 80.4)
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 #283752, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.019
- Dark Blue Grey #1F3B4D ΔE 0.021
- Gunmetal #293241 ΔE 0.031
- Midnight Green #073B4C ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.037
- Onyx #343A40 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.048
- Charcoal #264653 ΔE 0.049
Use #283752 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.