#5F9FBF
Closest named color: Greyblue (#77A1B5). oklch(67.2% 0.081 231.4), rgb(95, 159, 191).
Aa
Black text reads best on this color (7.19:1).
About this color
#5F9FBF is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.081 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.030 away. Black text reads best on it, at 7.19:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.19:1 |
| White text | 2.91:1 |
Values
| HEX | #5F9FBF |
| RGB | rgb(95, 159, 191) |
| HSL | hsl(200, 43%, 56%) |
| OKLCH | oklch(67.2% 0.081 231.4) |
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 #5F9FBF | 2.91:1 | Fails | Lc -60.8 | Content text, not long reading |
| Black text on #5F9FBF | 7.19:1 | AAA | Lc 48.6 | Large or bold text, headings |
| #5F9FBF text on white | 2.91:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #5F9FBF text on black | 7.19:1 | AAA | Lc -46.4 | Large or bold text, headings |
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 400.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#A0C7DC
oklch(80.8% 0.051 231.7)
-
Step 400
400 (this color)
#5F9FBF
oklch(67.2% 0.081 231.4)
-
Step 500
500
#3B94BD
oklch(63.1% 0.104 231.7)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005776
oklch(42.8% 0.087 231.2)
-
Step 900
900
#11485F
oklch(37.8% 0.067 230.8)
-
Step 950
950
#0D2A38
oklch(27% 0.043 232.5)
#5F9FBF 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) | #8F9DC1 | 0.056 |
| Deuteranopia (no green cones) | #8293BF | 0.049 |
| Tritanopia (no blue cones) | #2BA8A9 | 0.061 |
| Achromatopsia (no color) | #979797 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F9FBF
#5F9FBF
oklch(67.2% 0.081 231.4)
- #BE8867
#BE8867
oklch(67.2% 0.081 52.3)
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 #5F9FBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.030
- Cadet Blue #5F9EA0 ΔE 0.047
- Bluegrey #85A3B2 ΔE 0.049
- Bluey Grey #89A0B0 ΔE 0.051
- Faded Blue #658CBB ΔE 0.052
- Silver Lake Blue #778DA9 ΔE 0.054
- Cool Gray #8D99AE ΔE 0.055
- Blue Grey #758DA3 ΔE 0.057
Use #5F9FBF 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.