#638693
Closest named color: Steel Grey (#6F828A). oklch(59.8% 0.044 222.8), rgb(99, 134, 147).
Aa
Black text reads best on this color (5.36:1).
About this color
#638693 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.044 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.019 away. Black text reads best on it, at 5.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.36:1 |
| White text | 3.91:1 |
Values
| HEX | #638693 |
| RGB | rgb(99, 134, 147) |
| HSL | hsl(196, 20%, 48%) |
| OKLCH | oklch(59.8% 0.044 222.8) |
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 #638693 | 3.91:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #638693 | 5.36:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #638693 text on white | 3.91:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #638693 text on black | 5.36:1 | AA | Lc -35.1 | 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
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D1DBDF
oklch(88.5% 0.012 223.5)
-
Step 300
300
#B2C4CB
oklch(80.9% 0.022 223.1)
-
Step 400
400
#8AA6B0
oklch(70.7% 0.034 221.5)
-
Step 500
500 (this color)
#638693
oklch(59.8% 0.044 222.8)
-
Step 600
600
#547A88
oklch(55.6% 0.048 222.9)
-
Step 700
700
#446773
oklch(49.2% 0.044 221.5)
-
Step 800
800
#38545E
oklch(42.8% 0.037 222.3)
-
Step 900
900
#31454D
oklch(37.7% 0.029 224.6)
-
Step 950
950
#1D292D
oklch(27.2% 0.018 220.3)
#638693 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) | #7E8494 | 0.036 |
| Deuteranopia (no green cones) | #777E93 | 0.033 |
| Tritanopia (no blue cones) | #538A8A | 0.028 |
| Achromatopsia (no color) | #818181 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638693
#638693
oklch(59.8% 0.044 222.8)
- #97786B
#97786B
oklch(59.9% 0.044 43.9)
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 #638693, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.019
- Steel #738595 ΔE 0.021
- Slate Gray #708090 ΔE 0.022
- Grey Blue #647D8E ΔE 0.025
- Light Slate Gray #778899 ΔE 0.029
- Battleship Grey #6B7C85 ΔE 0.030
- Blue Grey #758DA3 ΔE 0.038
- Dusty Blue #5A86AD ΔE 0.041
Use #638693 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.