#5B8EA3
Closest named color: Blue Grey (#758DA3). oklch(61.9% 0.063 226), rgb(91, 142, 163).
Aa
Black text reads best on this color (5.84:1).
About this color
#5B8EA3 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.063 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.030 away. Black text reads best on it, at 5.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 5.84:1 |
| White text | 3.59:1 |
Values
| HEX | #5B8EA3 |
| RGB | rgb(91, 142, 163) |
| HSL | hsl(197, 28%, 50%) |
| OKLCH | oklch(61.9% 0.063 226) |
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 #5B8EA3 | 3.59:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #5B8EA3 | 5.84:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #5B8EA3 text on white | 3.59:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #5B8EA3 text on black | 5.84:1 | AA | Lc -38.2 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE2
oklch(88.6% 0.017 225.2)
-
Step 300
300
#ADC5D0
oklch(80.9% 0.03 227.1)
-
Step 400
400
#80A8B8
oklch(70.8% 0.049 224.4)
-
Step 500
500 (this color)
#5B8EA3
oklch(61.9% 0.063 226)
-
Step 600
600
#447C92
oklch(55.7% 0.068 225.6)
-
Step 700
700
#35687C
oklch(49% 0.063 225.9)
-
Step 800
800
#2D5565
oklch(42.7% 0.052 226.1)
-
Step 900
900
#284652
oklch(37.6% 0.041 225.6)
-
Step 950
950
#182930
oklch(26.9% 0.026 225.8)
#5B8EA3 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) | #838CA4 | 0.049 |
| Deuteranopia (no green cones) | #7883A3 | 0.045 |
| Tritanopia (no blue cones) | #3C9495 | 0.042 |
| Achromatopsia (no color) | #878787 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B8EA3
#5B8EA3
oklch(61.9% 0.063 226)
- #A67A66
#A67A66
oklch(61.8% 0.063 45.5)
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 #5B8EA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.032
- Light Slate Gray #778899 ΔE 0.035
- Silver Lake Blue #778DA9 ΔE 0.035
- Steel #738595 ΔE 0.036
- Off Blue #5684AE ΔE 0.039
- Faded Blue #658CBB ΔE 0.042
- Slate Gray #708090 ΔE 0.045
Use #5B8EA3 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.