#18567F
Closest named color: Deep Sea Blue (#015482). oklch(43.5% 0.091 242.7), rgb(24, 86, 127).
Aa
White text reads best on this color (7.84:1).
About this color
#18567F is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.091 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.013 away. White text reads best on it, at 7.84:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.67:1 |
| White text | 7.84:1 |
Values
| HEX | #18567F |
| RGB | rgb(24, 86, 127) |
| HSL | hsl(204, 68%, 30%) |
| OKLCH | oklch(43.5% 0.091 242.7) |
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 #18567F | 7.84:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #18567F | 2.67:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #18567F text on white | 7.84:1 | AAA | Lc 86.9 | Fine for body text |
| #18567F text on black | 2.67:1 | Fails | Lc -15.2 | Dividers and decoration only |
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 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCEC
oklch(88.5% 0.03 243.4)
-
Step 300
300
#A3C5E1
oklch(80.8% 0.054 243.3)
-
Step 400
400
#70A7D2
oklch(70.7% 0.086 242.9)
-
Step 500
500
#4791C6
oklch(63.2% 0.109 242.4)
-
Step 600
600
#237AB2
oklch(55.6% 0.118 242.3)
-
Step 700
700
#13669A
oklch(49% 0.111 243.1)
-
Step 800
800 (this color)
#18567F
oklch(43.5% 0.091 242.7)
-
Step 900
900
#1A4564
oklch(37.6% 0.071 243.3)
-
Step 950
950
#10293B
oklch(27.1% 0.046 242.4)
#18567F 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) | #435781 | 0.043 |
| Deuteranopia (no green cones) | #354E7E | 0.032 |
| Tritanopia (no blue cones) | #006065 | 0.062 |
| Achromatopsia (no color) | #525252 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18567F
#18567F
oklch(43.5% 0.091 242.7)
- #74440F
#74440F
oklch(43.5% 0.092 62.5)
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 #18567F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.013
- Light Navy #155084 ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.027
- Dusk Blue #26538D ΔE 0.029
- YInMn Blue #415A77 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.048
- Petrol #005F6A ΔE 0.052
- Cobalt #1E488F ΔE 0.053
Use #18567F 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.