#21896D
Closest named color: Viridian (#1E9167). oklch(56.5% 0.102 170.2), rgb(33, 137, 109).
Aa
Black text reads best on this color (4.86:1).
About this color
#21896D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.102 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.029 away. Black text reads best on it, at 4.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Viridian (#1E9167) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #21896D |
| RGB | rgb(33, 137, 109) |
| HSL | hsl(164, 61%, 33%) |
| OKLCH | oklch(56.5% 0.102 170.2) |
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 #21896D | 4.31:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #21896D | 4.86:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #21896D text on white | 4.31:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #21896D text on black | 4.86:1 | AA | Lc -32.2 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CADFD6
oklch(88.5% 0.026 168.2)
-
Step 300
300
#A4CBBC
oklch(81% 0.046 169.7)
-
Step 400
400
#70B09A
oklch(70.7% 0.074 170.4)
-
Step 500
500
#459C81
oklch(63.2% 0.094 170.1)
-
Step 600
600 (this color)
#21896D
oklch(56.5% 0.102 170.2)
-
Step 700
700
#097259
oklch(49.2% 0.095 170.3)
-
Step 800
800
#105D48
oklch(42.8% 0.079 169.4)
-
Step 900
900
#184C3D
oklch(37.7% 0.061 170.6)
-
Step 950
950
#102D24
oklch(27.2% 0.039 170.4)
#21896D 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) | #857F6C | 0.104 |
| Deuteranopia (no green cones) | #77766F | 0.099 |
| Tritanopia (no blue cones) | #008A81 | 0.030 |
| Achromatopsia (no color) | #7A7A7A | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21896D
#21896D
oklch(56.5% 0.102 170.2)
- #A25C7E
#A25C7E
oklch(56.5% 0.101 350.3)
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 #21896D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.029
- Sea Green #2E8B57 ΔE 0.034
- Dark Cyan #008B8B ΔE 0.044
- Dark Sage #598556 ΔE 0.047
- Teal #008080 ΔE 0.048
- Dusty Teal #4C9085 ΔE 0.053
- Ocean Green #3D9973 ΔE 0.053
- Light Forest Green #4F9153 ΔE 0.058
Use #21896D 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.