#184E63
Closest named color: Dark Grey Blue (#29465B). oklch(39.9% 0.065 227.9), rgb(24, 78, 99).
Aa
White text reads best on this color (9.09:1).
About this color
#184E63 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.065 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.027 away. White text reads best on it, at 9.09:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.30:1 |
| White text | 9.09:1 |
Values
| HEX | #184E63 |
| RGB | rgb(24, 78, 99) |
| HSL | hsl(197, 61%, 24%) |
| OKLCH | oklch(39.9% 0.065 227.9) |
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 #184E63 | 9.09:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #184E63 | 2.30:1 | Fails | Lc 13.3 | Not readable |
| #184E63 text on white | 9.09:1 | AAA | Lc 90.7 | Preferred for body text |
| #184E63 text on black | 2.30:1 | Fails | Lc -11.6 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C7DDE7
oklch(88.4% 0.027 226.8)
-
Step 300
300
#A0C8DA
oklch(81% 0.049 227.1)
-
Step 400
400
#6AABC7
oklch(70.8% 0.078 227.4)
-
Step 500
500
#3A95B9
oklch(63.1% 0.1 227.9)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900 (this color)
#184E63
oklch(39.9% 0.065 227.9)
-
Step 950
950
#0C2A36
oklch(26.9% 0.042 227.8)
#184E63 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) | #434D64 | 0.048 |
| Deuteranopia (no green cones) | #394563 | 0.042 |
| Tritanopia (no blue cones) | #005455 | 0.037 |
| Achromatopsia (no color) | #484848 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184E63
#184E63
oklch(39.9% 0.065 227.9)
- #643C27
#643C27
oklch(39.9% 0.065 47.9)
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 #184E63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.027
- Charcoal #264653 ΔE 0.032
- Deep Teal #00555A ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.039
- Dark Teal #014D4E ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.051
- Petrol #005F6A ΔE 0.053
- Dark Blue Green #005249 ΔE 0.053
Use #184E63 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.