#658C91
Closest named color: Steel (#738595). oklch(61.3% 0.044 206), rgb(101, 140, 145).
Aa
Black text reads best on this color (5.71:1).
About this color
#658C91 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.044 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Steel (#738595), ΔE 0.028 away. Black text reads best on it, at 5.71:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Steel (#738595) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #658C91 |
| RGB | rgb(101, 140, 145) |
| HSL | hsl(187, 18%, 48%) |
| OKLCH | oklch(61.3% 0.044 206) |
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 #658C91 | 3.67:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #658C91 | 5.71:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #658C91 text on white | 3.67:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #658C91 text on black | 5.71:1 | AA | Lc -37.4 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D1DBDD
oklch(88.4% 0.011 211)
-
Step 300
300
#B2C5C7
oklch(81% 0.021 204.4)
-
Step 400
400
#88A7AB
oklch(70.6% 0.035 206)
-
Step 500
500 (this color)
#658C91
oklch(61.3% 0.044 206)
-
Step 600
600
#517C81
oklch(55.7% 0.048 205.1)
-
Step 700
700
#42686D
oklch(49.1% 0.044 206.3)
-
Step 800
800
#365559
oklch(42.7% 0.037 206.1)
-
Step 900
900
#2F4649
oklch(37.6% 0.029 206.2)
-
Step 950
950
#1C292B
oklch(27% 0.018 207.9)
#658C91 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) | #868991 | 0.043 |
| Deuteranopia (no green cones) | #7E8391 | 0.040 |
| Tritanopia (no blue cones) | #568F8D | 0.020 |
| Achromatopsia (no color) | #858585 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #658C91
#658C91
oklch(61.3% 0.044 206)
- #9D7A76
#9D7A76
oklch(61.2% 0.044 26)
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 #658C91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel #738595 ΔE 0.028
- Steel Grey #6F828A ΔE 0.029
- Light Slate Gray #778899 ΔE 0.030
- Blue Grey #758DA3 ΔE 0.036
- Slate Gray #708090 ΔE 0.036
- Dusty Teal #4C9085 ΔE 0.037
- Grey Blue #647D8E ΔE 0.044
- Battleship Grey #6B7C85 ΔE 0.044
Use #658C91 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.