#184255
Closest named color: Charcoal (#264653). oklch(35.9% 0.057 230.9), rgb(24, 66, 85).
Aa
White text reads best on this color (10.77:1).
About this color
#184255 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.057 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.021 away. White text reads best on it, at 10.77:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.94:1 |
| White text | 10.77:1 |
Values
| HEX | #184255 |
| RGB | rgb(24, 66, 85) |
| HSL | hsl(199, 56%, 21%) |
| OKLCH | oklch(35.9% 0.057 230.9) |
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 #184255 | 10.77:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #184255 | 1.94:1 | Fails | Lc 9.1 | Not readable |
| #184255 text on white | 10.77:1 | AAA | Lc 94.8 | Preferred for body text |
| #184255 text on black | 1.94:1 | Fails | Lc -7.8 | 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
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE6
oklch(88.4% 0.024 231.9)
-
Step 300
300
#A6C6D7
oklch(80.9% 0.042 231.1)
-
Step 400
400
#74A9C3
oklch(70.7% 0.068 230.1)
-
Step 500
500
#4D93B4
oklch(63.1% 0.086 230.7)
-
Step 600
600
#2B7DA0
oklch(55.6% 0.094 230.4)
-
Step 700
700
#1D6989
oklch(49.1% 0.087 231)
-
Step 800
800
#1B566F
oklch(42.7% 0.072 230.2)
-
Step 900
900 (this color)
#184255
oklch(35.9% 0.057 230.9)
-
Step 950
950
#122A35
oklch(27.1% 0.036 229.8)
#184255 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) | #384156 | 0.038 |
| Deuteranopia (no green cones) | #303B55 | 0.033 |
| Tritanopia (no blue cones) | #004748 | 0.035 |
| Achromatopsia (no color) | #3E3E3E | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184255
#184255
oklch(35.9% 0.057 230.9)
- #543420
#543420
oklch(35.9% 0.056 52.1)
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 #184255, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.023
- Dark Grey Blue #29465B ΔE 0.025
- Midnight Green #073B4C ΔE 0.030
- Dark Teal #014D4E ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.044
- Onyx #343A40 ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.052
Use #184255 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.