#338C91
Closest named color: Dark Cyan (#008B8B). oklch(59% 0.083 200.4), rgb(51, 140, 145).
Aa
Black text reads best on this color (5.30:1).
About this color
#338C91 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.083 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.022 away. Black text reads best on it, at 5.30:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.30:1 |
| White text | 3.96:1 |
Values
| HEX | #338C91 |
| RGB | rgb(51, 140, 145) |
| HSL | hsl(183, 48%, 38%) |
| OKLCH | oklch(59% 0.083 200.4) |
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 #338C91 | 3.96:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #338C91 | 5.30:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #338C91 text on white | 3.96:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #338C91 text on black | 5.30:1 | AA | Lc -35.0 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADEDF
oklch(88.6% 0.021 200.4)
-
Step 300
300
#A5C8CA
oklch(80.8% 0.037 200.7)
-
Step 400
400
#73ACB0
oklch(70.7% 0.06 201.5)
-
Step 500
500
#4A989C
oklch(63.2% 0.077 199.9)
-
Step 600
600 (this color)
#338C91
oklch(59% 0.083 200.4)
-
Step 700
700
#166E72
oklch(49.2% 0.078 199.7)
-
Step 800
800
#17595D
oklch(42.6% 0.064 201)
-
Step 900
900
#1B4A4C
oklch(37.8% 0.051 199.1)
-
Step 950
950
#122B2D
oklch(27% 0.031 202.3)
#338C91 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) | #828691 | 0.084 |
| Deuteranopia (no green cones) | #747B91 | 0.079 |
| Tritanopia (no blue cones) | #00918D | 0.024 |
| Achromatopsia (no color) | #808080 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #338C91
#338C91
oklch(59% 0.083 200.4)
- #A96968
#A96968
oklch(59% 0.083 20.8)
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 #338C91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.022
- Teal Green #0A9396 ΔE 0.022
- Dusty Teal #4C9085 ΔE 0.031
- Teal Blue #01889F ΔE 0.033
- Sea #3C9992 ΔE 0.041
- Blue Green #0F9B8E ΔE 0.047
- Teal #008080 ΔE 0.048
- Persian Green #2A9D8F ΔE 0.052
Use #338C91 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.