#3E737F
Closest named color: Deep Aqua (#08787F). oklch(52.4% 0.059 214.1), rgb(62, 115, 127).
Aa
White text reads best on this color (5.29:1).
About this color
#3E737F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.059 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.032 away. White text reads best on it, at 5.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #3E737F |
| RGB | rgb(62, 115, 127) |
| HSL | hsl(191, 34%, 37%) |
| OKLCH | oklch(52.4% 0.059 214.1) |
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 #3E737F | 5.29:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #3E737F | 3.96:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #3E737F text on white | 5.29:1 | AA | Lc 76.2 | Fine for body text |
| #3E737F text on black | 3.96:1 | AA large text | Lc -25.5 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CFDCDF
oklch(88.6% 0.015 213.1)
-
Step 300
300
#AEC5CB
oklch(80.8% 0.026 215.2)
-
Step 400
400
#82A8B1
oklch(70.7% 0.043 213.8)
-
Step 500
500
#62929E
oklch(63% 0.055 215.1)
-
Step 600
600 (this color)
#3E737F
oklch(52.4% 0.059 214.1)
-
Step 700
700
#396974
oklch(49.1% 0.055 214.2)
-
Step 800
800
#2F565E
oklch(42.8% 0.046 212.3)
-
Step 900
900
#2A474D
oklch(37.8% 0.036 212.2)
-
Step 950
950
#19292D
oklch(26.9% 0.023 215.1)
#3E737F 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) | #6A7080 | 0.054 |
| Deuteranopia (no green cones) | #60687F | 0.050 |
| Tritanopia (no blue cones) | #187877 | 0.034 |
| Achromatopsia (no color) | #6B6B6B | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E737F
#3E737F
oklch(52.4% 0.059 214.1)
- #895E53
#895E53
oklch(52.5% 0.059 34.9)
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 #3E737F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.032
- Metallic Blue #4F738E ΔE 0.032
- Ocean #017B92 ΔE 0.039
- Bluegreen #017A79 ΔE 0.040
- Deep Turquoise #017374 ΔE 0.040
- Slate #516572 ΔE 0.043
- Dark Aquamarine #017371 ΔE 0.043
- Sea Blue #047495 ΔE 0.043
Use #3E737F 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.