#18394E
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33% 0.054 239.2), rgb(24, 57, 78).
Aa
White text reads best on this color (12.11:1).
About this color
#18394E is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.054 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.011 away. White text reads best on it, at 12.11:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.73:1 |
| White text | 12.11:1 |
Values
| HEX | #18394E |
| RGB | rgb(24, 57, 78) |
| HSL | hsl(203, 53%, 20%) |
| OKLCH | oklch(33% 0.054 239.2) |
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 #18394E | 12.11:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #18394E | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #18394E text on white | 12.11:1 | AAA | Lc 97.5 | Preferred for body text |
| #18394E text on black | 1.73:1 | 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
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#AAC5D8
oklch(80.9% 0.04 238.7)
-
Step 400
400
#7BA7C5
oklch(70.8% 0.065 238.7)
-
Step 500
500
#5890B6
oklch(63% 0.082 239.6)
-
Step 600
600
#3C7AA2
oklch(55.6% 0.089 239.4)
-
Step 700
700
#2D678B
oklch(49.2% 0.083 238.9)
-
Step 800
800
#275471
oklch(42.8% 0.069 239.4)
-
Step 900
900 (this color)
#18394E
oklch(33% 0.054 239.2)
-
Step 950
950
#162935
oklch(27.1% 0.033 237.5)
#18394E 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) | #2F394F | 0.029 |
| Deuteranopia (no green cones) | #28334E | 0.026 |
| Tritanopia (no blue cones) | #003E40 | 0.038 |
| Achromatopsia (no color) | #363636 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18394E
#18394E
oklch(33% 0.054 239.2)
- #4A2E17
#4A2E17
oklch(33% 0.054 58.7)
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 #18394E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.011
- Midnight Green #073B4C ΔE 0.014
- Prussian Blue #1D3557 ΔE 0.024
- Gunmetal #293241 ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.043
- Onyx #343A40 ΔE 0.043
- Charcoal #264653 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.051
Use #18394E 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.