#28384A
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33.5% 0.038 251.9), rgb(40, 56, 74).
Aa
White text reads best on this color (11.96:1).
About this color
#28384A is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.038 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.013 away. White text reads best on it, at 11.96:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.75:1 |
| White text | 11.96:1 |
Values
| HEX | #28384A |
| RGB | rgb(40, 56, 74) |
| HSL | hsl(212, 30%, 22%) |
| OKLCH | oklch(33.5% 0.038 251.9) |
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 #28384A | 11.96:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #28384A | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #28384A text on white | 11.96:1 | AAA | Lc 97.4 | Preferred for body text |
| #28384A 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B4C2D3
oklch(80.9% 0.029 253.3)
-
Step 400
400
#8CA3BD
oklch(70.7% 0.046 251.6)
-
Step 500
500
#708CAD
oklch(63.1% 0.059 252.9)
-
Step 600
600
#587698
oklch(55.6% 0.064 252.1)
-
Step 700
700
#486382
oklch(49.1% 0.06 252.4)
-
Step 800
800
#3B5169
oklch(42.7% 0.048 251.1)
-
Step 900
900 (this color)
#28384A
oklch(33.5% 0.038 251.9)
-
Step 950
950
#1E2732
oklch(26.9% 0.024 253.7)
#28384A 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) | #31394B | 0.014 |
| Deuteranopia (no green cones) | #2D354A | 0.012 |
| Tritanopia (no blue cones) | #1C3C3E | 0.033 |
| Achromatopsia (no color) | #373737 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28384A
#28384A
oklch(33.5% 0.038 251.9)
- #433320
#433320
oklch(33.4% 0.038 70.7)
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 #28384A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.013
- Gunmetal #293241 ΔE 0.022
- Onyx #343A40 ΔE 0.027
- Midnight Green #073B4C ΔE 0.030
- Prussian Blue #1D3557 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.035
- Charcoal #264653 ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.048
Use #28384A 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.