#137E9B
Closest named color: Ocean (#017B92). oklch(55.1% 0.098 222.4), rgb(19, 126, 155).
Aa
White text reads best on this color (4.68:1).
About this color
#137E9B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.098 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.017 away. White text reads best on it, at 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.48:1 |
| White text | 4.68:1 |
Values
| HEX | #137E9B |
| RGB | rgb(19, 126, 155) |
| HSL | hsl(193, 78%, 34%) |
| OKLCH | oklch(55.1% 0.098 222.4) |
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 #137E9B | 4.68:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #137E9B | 4.48:1 | AA large text | Lc 32.0 | Non-text elements, placeholder text |
| #137E9B text on white | 4.68:1 | AA | Lc 72.1 | Content text, not long reading |
| #137E9B text on black | 4.48:1 | AA large text | Lc -29.6 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A2C8D5
oklch(81% 0.044 220.7)
-
Step 400
400
#6EABC0
oklch(70.7% 0.07 221.8)
-
Step 500
500
#4295B1
oklch(63% 0.09 223.3)
-
Step 600
600 (this color)
#137E9B
oklch(55.1% 0.098 222.4)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#0B586D
oklch(42.8% 0.076 222.4)
-
Step 900
900
#164858
oklch(37.6% 0.059 223.1)
-
Step 950
950
#0F2A34
oklch(26.9% 0.038 225.1)
#137E9B 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) | #6D7B9C | 0.078 |
| Deuteranopia (no green cones) | #5C6F9B | 0.068 |
| Tritanopia (no blue cones) | #008787 | 0.048 |
| Achromatopsia (no color) | #747474 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #137E9B
#137E9B
oklch(55.1% 0.098 222.4)
- #A15D42
#A15D42
oklch(55% 0.098 42.1)
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 #137E9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.017
- Teal Blue #01889F ΔE 0.029
- Sea Blue #047495 ΔE 0.031
- Cerulean #457B9D ΔE 0.032
- Nice Blue #107AB0 ΔE 0.038
- Ocean Blue #03719C ΔE 0.041
- Dull Blue #49759C ΔE 0.042
- Stormy Blue #507B9C ΔE 0.042
Use #137E9B 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.