#21796B
Closest named color: Bluegreen (#017A79). oklch(52.1% 0.084 179.9), rgb(33, 121, 107).
Aa
White text reads best on this color (5.23:1).
About this color
#21796B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.084 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.022 away. White text reads best on it, at 5.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.01:1 |
| White text | 5.23:1 |
Values
| HEX | #21796B |
| RGB | rgb(33, 121, 107) |
| HSL | hsl(170, 57%, 30%) |
| OKLCH | oklch(52.1% 0.084 179.9) |
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 #21796B | 5.23:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #21796B | 4.01:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #21796B text on white | 5.23:1 | AA | Lc 75.7 | Fine for body text |
| #21796B text on black | 4.01:1 | AA large text | Lc -26.1 | 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 700.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDEA
oklch(93.7% 0.012 178)
-
Step 200
200
#CADED9
oklch(88.4% 0.022 179.1)
-
Step 300
300
#A5CAC1
oklch(81% 0.041 178.8)
-
Step 400
400
#72AEA2
oklch(70.6% 0.065 180.3)
-
Step 500
500
#499A8B
oklch(63.1% 0.083 179.7)
-
Step 600
600
#238475
oklch(55.5% 0.09 180.1)
-
Step 700
700 (this color)
#21796B
oklch(52.1% 0.084 179.9)
-
Step 800
800
#155B50
oklch(42.6% 0.069 179.9)
-
Step 900
900
#1B4B43
oklch(37.7% 0.054 180.6)
-
Step 950
950
#112C27
oklch(27% 0.035 179.9)
#21796B 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) | #74716A | 0.090 |
| Deuteranopia (no green cones) | #67686C | 0.085 |
| Tritanopia (no blue cones) | #007B75 | 0.016 |
| Achromatopsia (no color) | #6C6C6C | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21796B
#21796B
oklch(52.1% 0.084 179.9)
- #915467
#915467
oklch(52.2% 0.084 0.4)
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 #21796B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.022
- Dark Aquamarine #017371 ΔE 0.027
- Deep Turquoise #017374 ΔE 0.030
- Teal #008080 ΔE 0.033
- Deep Aqua #08787F ΔE 0.033
- Dark Aqua #05696B ΔE 0.055
- Ocean #017B92 ΔE 0.060
- Dark Cyan #008B8B ΔE 0.062
Use #21796B 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.