#00738F
Closest named color: Sea Blue (#047495). oklch(51.5% 0.096 222.5), rgb(0, 115, 143).
Aa
White text reads best on this color (5.45:1).
About this color
#00738F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.096 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.010 away. White text reads best on it, at 5.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #00738F |
| RGB | rgb(0, 115, 143) |
| HSL | hsl(192, 100%, 28%) |
| OKLCH | oklch(51.5% 0.096 222.5) |
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 #00738F | 5.45:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #00738F | 3.84:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #00738F text on white | 5.45:1 | AA | Lc 76.6 | Fine for body text |
| #00738F text on black | 3.84:1 | AA large text | Lc -25.1 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE6
oklch(88.5% 0.026 225.3)
-
Step 300
300
#A1C8D6
oklch(80.9% 0.046 221.7)
-
Step 400
400
#6BABC2
oklch(70.7% 0.074 222.9)
-
Step 500
500
#3C96B3
oklch(63.1% 0.095 222.7)
-
Step 600
600
#02809F
oklch(55.7% 0.103 222.7)
-
Step 700
700 (this color)
#00738F
oklch(51.5% 0.096 222.5)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#114959
oklch(37.8% 0.062 221.4)
-
Step 950
950
#0D2B34
oklch(27.1% 0.039 220.8)
#00738F 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) | #637090 | 0.076 |
| Deuteranopia (no green cones) | #52648F | 0.067 |
| Tritanopia (no blue cones) | #007C7C | 0.047 |
| Achromatopsia (no color) | #696969 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00738F
#00738F
oklch(51.5% 0.096 222.5)
- #955439
#955439
oklch(51.6% 0.095 42.9)
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 #00738F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.010
- Ocean Blue #03719C ΔE 0.024
- Ocean #017B92 ΔE 0.024
- Deep Aqua #08787F ΔE 0.034
- Peacock Blue #016795 ΔE 0.041
- Muted Blue #3B719F ΔE 0.043
- Deep Turquoise #017374 ΔE 0.044
- Bluegreen #017A79 ΔE 0.047
Use #00738F 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.