#21484C
Closest named color: Charcoal (#264653). oklch(37.5% 0.045 204.3), rgb(33, 72, 76).
Aa
White text reads best on this color (10.01:1).
About this color
#21484C is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.045 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.017 away. White text reads best on it, at 10.01:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.09:1 |
| White text | 10.01:1 |
Values
| HEX | #21484C |
| RGB | rgb(33, 72, 76) |
| HSL | hsl(186, 39%, 21%) |
| OKLCH | oklch(37.5% 0.045 204.3) |
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 #21484C | 10.01:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #21484C | 2.09:1 | Fails | Lc 10.8 | Not readable |
| #21484C text on white | 10.01:1 | AAA | Lc 93.1 | Preferred for body text |
| #21484C text on black | 2.09:1 | Fails | Lc -9.4 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDDF
oklch(88.5% 0.018 205.3)
-
Step 300
300
#A8C7CB
oklch(80.8% 0.034 206)
-
Step 400
400
#79ABB0
oklch(70.8% 0.053 203.8)
-
Step 500
500
#53969D
oklch(63.2% 0.069 204.3)
-
Step 600
600
#358087
oklch(55.6% 0.074 203.7)
-
Step 700
700
#266C73
oklch(49.1% 0.069 204.5)
-
Step 800
800
#22585D
oklch(42.7% 0.057 203.6)
-
Step 900
900 (this color)
#21484C
oklch(37.5% 0.045 204.3)
-
Step 950
950
#152B2D
oklch(27.2% 0.028 203.2)
#21484C 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) | #43454C | 0.045 |
| Deuteranopia (no green cones) | #3C404C | 0.041 |
| Tritanopia (no blue cones) | #044B49 | 0.022 |
| Achromatopsia (no color) | #424242 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21484C
#21484C
oklch(37.5% 0.045 204.3)
- #563835
#563835
oklch(37.5% 0.044 25.7)
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 #21484C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.017
- Dark Teal #014D4E ΔE 0.022
- Dark Slate Gray #2F4F4F ΔE 0.029
- Dark Grey Blue #29465B ΔE 0.031
- Charcoal Grey #3C4142 ΔE 0.038
- Dark Blue Green #005249 ΔE 0.038
- Deep Teal #00555A ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.045
Use #21484C 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.