#2F738F
Closest named color: Sea Blue (#047495). oklch(52.4% 0.081 228.4), rgb(47, 115, 143).
Aa
White text reads best on this color (5.28:1).
About this color
#2F738F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.081 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.019 away. White text reads best on it, at 5.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.96:1 |
| White text | 5.28:1 |
Values
| HEX | #2F738F |
| RGB | rgb(47, 115, 143) |
| HSL | hsl(197, 51%, 37%) |
| OKLCH | oklch(52.4% 0.081 228.4) |
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 #2F738F | 5.28:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #2F738F | 3.96:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #2F738F text on white | 5.28:1 | AA | Lc 76.1 | Fine for body text |
| #2F738F text on black | 3.96:1 | AA large text | Lc -25.7 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE4
oklch(88.5% 0.02 229.1)
-
Step 300
300
#A9C6D3
oklch(80.9% 0.036 226.7)
-
Step 400
400
#7AA8BE
oklch(70.7% 0.059 229.1)
-
Step 500
500
#5692AD
oklch(63% 0.074 228.7)
-
Step 600
600 (this color)
#2F738F
oklch(52.4% 0.081 228.4)
-
Step 700
700
#2B6982
oklch(49.2% 0.074 227.8)
-
Step 800
800
#25556A
oklch(42.6% 0.062 229.4)
-
Step 900
900
#234756
oklch(37.8% 0.049 227.3)
-
Step 950
950
#162932
oklch(26.9% 0.03 229.7)
#2F738F 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) | #647190 | 0.058 |
| Deuteranopia (no green cones) | #57678F | 0.051 |
| Tritanopia (no blue cones) | #007B7C | 0.049 |
| Achromatopsia (no color) | #6C6C6C | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F738F
#2F738F
oklch(52.4% 0.081 228.4)
- #905B3F
#905B3F
oklch(52.3% 0.081 48.2)
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 #2F738F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.019
- Ocean #017B92 ΔE 0.027
- Ocean Blue #03719C ΔE 0.029
- Muted Blue #3B719F ΔE 0.031
- Metallic Blue #4F738E ΔE 0.031
- Dull Blue #49759C ΔE 0.034
- Cerulean #457B9D ΔE 0.038
- Deep Aqua #08787F ΔE 0.039
Use #2F738F 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.