#184458
Closest named color: Charcoal (#264653). oklch(36.6% 0.059 231.2), rgb(24, 68, 88).
Aa
White text reads best on this color (10.46:1).
About this color
#184458 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.059 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.018 away. White text reads best on it, at 10.46:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.00:1 |
| White text | 10.46:1 |
Values
| HEX | #184458 |
| RGB | rgb(24, 68, 88) |
| HSL | hsl(199, 57%, 22%) |
| OKLCH | oklch(36.6% 0.059 231.2) |
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 #184458 | 10.46:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #184458 | 2.00:1 | Fails | Lc 9.8 | Not readable |
| #184458 text on white | 10.46:1 | AAA | Lc 94.1 | Preferred for body text |
| #184458 text on black | 2.00:1 | Fails | Lc -8.5 | 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
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A5C6D8
oklch(80.8% 0.044 231.9)
-
Step 400
400
#72A9C5
oklch(70.7% 0.071 231.2)
-
Step 500
500
#4A93B6
oklch(63.1% 0.09 231.4)
-
Step 600
600
#267DA2
oklch(55.6% 0.098 231)
-
Step 700
700
#17698B
oklch(49% 0.091 231.5)
-
Step 800
800
#175671
oklch(42.7% 0.076 231.3)
-
Step 900
900 (this color)
#184458
oklch(36.6% 0.059 231.2)
-
Step 950
950
#112A35
oklch(27.1% 0.037 229)
#184458 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) | #3A4359 | 0.040 |
| Deuteranopia (no green cones) | #313D58 | 0.033 |
| Tritanopia (no blue cones) | #00494B | 0.035 |
| Achromatopsia (no color) | #3F3F3F | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184458
#184458
oklch(36.6% 0.059 231.2)
- #573521
#573521
oklch(36.5% 0.058 50.6)
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 #184458, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.018
- Dark Grey Blue #29465B ΔE 0.020
- Dark Blue Grey #1F3B4D ΔE 0.031
- Midnight Green #073B4C ΔE 0.037
- Dark Teal #014D4E ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.049
- Onyx #343A40 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.051
Use #184458 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.