#437778
Closest named color: Deep Aqua (#08787F). oklch(53.4% 0.056 197.2), rgb(67, 119, 120).
Aa
White text reads best on this color (5.06:1).
About this color
#437778 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.056 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.034 away. White text reads best on it, at 5.06:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #437778 |
| RGB | rgb(67, 119, 120) |
| HSL | hsl(181, 28%, 37%) |
| OKLCH | oklch(53.4% 0.056 197.2) |
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 #437778 | 5.06:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #437778 | 4.14:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #437778 text on white | 5.06:1 | AA | Lc 74.9 | Content text, not long reading |
| #437778 text on black | 4.14:1 | AA large text | Lc -26.9 | 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 600.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDC
oklch(88.5% 0.014 196.9)
-
Step 300
300
#AFC6C6
oklch(80.9% 0.025 196.7)
-
Step 400
400
#84A9A9
oklch(70.8% 0.04 196.3)
-
Step 500
500
#649394
oklch(63% 0.051 197.6)
-
Step 600
600 (this color)
#437778
oklch(53.4% 0.056 197.2)
-
Step 700
700
#3A6A6B
oklch(49.1% 0.052 197.3)
-
Step 800
800
#315657
oklch(42.6% 0.042 197.9)
-
Step 900
900
#2C4748
oklch(37.7% 0.033 198.8)
-
Step 950
950
#1A2A2A
oklch(27.1% 0.021 196)
#437778 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) | #717378 | 0.058 |
| Deuteranopia (no green cones) | #676C78 | 0.053 |
| Tritanopia (no blue cones) | #2A7A77 | 0.022 |
| Achromatopsia (no color) | #6E6E6E | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #437778
#437778
oklch(53.4% 0.056 197.2)
- #8A6061
#8A6061
oklch(53.4% 0.055 17.5)
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 #437778, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.034
- Bluegreen #017A79 ΔE 0.035
- Teal #008080 ΔE 0.038
- Deep Turquoise #017374 ΔE 0.042
- Dark Aquamarine #017371 ΔE 0.044
- Metallic Blue #4F738E ΔE 0.044
- Ocean #017B92 ΔE 0.047
- Battleship Gray #6C757D ΔE 0.052
Use #437778 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.