#64899C
Closest named color: Steel (#738595). oklch(60.9% 0.05 230.9), rgb(100, 137, 156).
Aa
Black text reads best on this color (5.60:1).
About this color
#64899C is a medium-dark, muted blue. In OKLCH its lightness is 61%, its chroma 0.050 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Steel (#738595), ΔE 0.021 away. Black text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Steel (#738595) |
| Black text | 5.60:1 |
| White text | 3.74:1 |
Values
| HEX | #64899C |
| RGB | rgb(100, 137, 156) |
| HSL | hsl(200, 22%, 50%) |
| OKLCH | oklch(60.9% 0.05 230.9) |
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 #64899C | 3.74:1 | AA large text | Lc -70.5 | Content text, not long reading |
| Black text on #64899C | 5.60:1 | AA | Lc 39.1 | Non-text elements, placeholder text |
| #64899C text on white | 3.74:1 | AA large text | Lc 65.0 | Content text, not long reading |
| #64899C text on black | 5.60:1 | AA | Lc -36.6 | 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
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D1DBE1
oklch(88.6% 0.014 233.8)
-
Step 300
300
#B1C4CE
oklch(80.9% 0.025 230.5)
-
Step 400
400
#88A6B5
oklch(70.8% 0.04 229.6)
-
Step 500
500 (this color)
#64899C
oklch(60.9% 0.05 230.9)
-
Step 600
600
#51798E
oklch(55.5% 0.055 232)
-
Step 700
700
#426678
oklch(49% 0.05 230.8)
-
Step 800
800
#365362
oklch(42.6% 0.043 231.6)
-
Step 900
900
#2F4550
oklch(37.7% 0.033 230.4)
-
Step 950
950
#1C282F
oklch(26.9% 0.021 234.2)
#64899C 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) | #80889D | 0.036 |
| Deuteranopia (no green cones) | #78819C | 0.033 |
| Tritanopia (no blue cones) | #518E8F | 0.036 |
| Achromatopsia (no color) | #848484 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64899C
#64899C
oklch(60.9% 0.05 230.9)
- #9C7B68
#9C7B68
oklch(61% 0.05 51.4)
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 #64899C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel #738595 ΔE 0.021
- Light Slate Gray #778899 ΔE 0.024
- Blue Grey #758DA3 ΔE 0.027
- Slate Gray #708090 ΔE 0.028
- Steel Grey #6F828A ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.032
- Silver Lake Blue #778DA9 ΔE 0.034
- Grey Blue #647D8E ΔE 0.036
Use #64899C 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.