#33737C
Closest named color: Deep Aqua (#08787F). oklch(51.8% 0.066 207.7), rgb(51, 115, 124).
Aa
White text reads best on this color (5.40:1).
About this color
#33737C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.066 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.023 away. White text reads best on it, at 5.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.88:1 |
| White text | 5.40:1 |
Values
| HEX | #33737C |
| RGB | rgb(51, 115, 124) |
| HSL | hsl(187, 42%, 34%) |
| OKLCH | oklch(51.8% 0.066 207.7) |
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 #33737C | 5.40:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #33737C | 3.88:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #33737C text on white | 5.40:1 | AA | Lc 76.8 | Fine for body text |
| #33737C text on black | 3.88:1 | AA large text | Lc -25.0 | 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
#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
#AAC7CB
oklch(80.9% 0.032 206.7)
-
Step 400
400
#7BAAB1
oklch(70.7% 0.051 207.6)
-
Step 500
500
#57959E
oklch(63.1% 0.065 207.6)
-
Step 600
600
#397F89
oklch(55.6% 0.071 207.9)
-
Step 700
700 (this color)
#33737C
oklch(51.8% 0.066 207.7)
-
Step 800
800
#25575F
oklch(42.6% 0.055 209.3)
-
Step 900
900
#23484D
oklch(37.6% 0.043 206.9)
-
Step 950
950
#162A2D
oklch(26.9% 0.026 207.9)
#33737C 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) | #6A6F7D | 0.064 |
| Deuteranopia (no green cones) | #5F667C | 0.060 |
| Tritanopia (no blue cones) | #007876 | 0.030 |
| Achromatopsia (no color) | #6A6A6A | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33737C
#33737C
oklch(51.8% 0.066 207.7)
- #8B5953
#8B5953
oklch(51.7% 0.067 27.1)
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 #33737C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.023
- Deep Turquoise #017374 ΔE 0.028
- Bluegreen #017A79 ΔE 0.030
- Dark Aquamarine #017371 ΔE 0.032
- Ocean #017B92 ΔE 0.038
- Teal #008080 ΔE 0.041
- Sea Blue #047495 ΔE 0.042
- Metallic Blue #4F738E ΔE 0.043
Use #33737C 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.