#5B9EA1
Closest named color: Cadet Blue (#5F9EA0). oklch(65.6% 0.068 199.3), rgb(91, 158, 161).
Aa
Black text reads best on this color (6.85:1).
About this color
#5B9EA1 is a medium-light, muted teal or cyan. In OKLCH its lightness is 66%, its chroma 0.068 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.004 away. Black text reads best on it, at 6.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.85:1 |
| White text | 3.06:1 |
Values
| HEX | #5B9EA1 |
| RGB | rgb(91, 158, 161) |
| HSL | hsl(183, 28%, 49%) |
| OKLCH | oklch(65.6% 0.068 199.3) |
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 #5B9EA1 | 3.06:1 | AA large text | Lc -62.8 | Content text, not long reading |
| Black text on #5B9EA1 | 6.85:1 | AA | Lc 46.6 | Large or bold text, headings |
| #5B9EA1 text on white | 3.06:1 | AA large text | Lc 57.4 | Large or bold text, headings |
| #5B9EA1 text on black | 6.85:1 | AA | Lc -44.3 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDE
oklch(88.5% 0.018 201.1)
-
Step 300
300
#A8C8C9
oklch(81% 0.034 198.8)
-
Step 400
400
#79ABAD
oklch(70.7% 0.053 199.2)
-
Step 500
500 (this color)
#5B9EA1
oklch(65.6% 0.068 199.3)
-
Step 600
600
#348184
oklch(55.7% 0.075 198.8)
-
Step 700
700
#266D70
oklch(49.2% 0.069 199.1)
-
Step 800
800
#21585B
oklch(42.6% 0.057 200.2)
-
Step 900
900
#21494B
oklch(37.7% 0.045 199.8)
-
Step 950
950
#152B2C
oklch(27.1% 0.028 199.4)
#5B9EA1 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) | #9698A1 | 0.071 |
| Deuteranopia (no green cones) | #898FA1 | 0.065 |
| Tritanopia (no blue cones) | #39A29F | 0.028 |
| Achromatopsia (no color) | #939393 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B9EA1
#5B9EA1
oklch(65.6% 0.068 199.3)
- #B78080
#B78080
oklch(65.5% 0.069 19.1)
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 #5B9EA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.004
- Dull Teal #5F9E8F ΔE 0.027
- Grey Teal #5E9B8A ΔE 0.033
- Sea #3C9992 ΔE 0.039
- Greyblue #77A1B5 ΔE 0.045
- Persian Green #2A9D8F ΔE 0.048
- Dusty Teal #4C9085 ΔE 0.055
- Blue Grey #758DA3 ΔE 0.055
Use #5B9EA1 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.