#3099BC
Closest named color: Blue NCS (#118AB2). oklch(63.9% 0.106 224.8), rgb(48, 153, 188).
Aa
Black text reads best on this color (6.40:1).
About this color
#3099BC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.106 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.048 away. Black text reads best on it, at 6.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.40:1 |
| White text | 3.27:1 |
Values
| HEX | #3099BC |
| RGB | rgb(48, 153, 188) |
| HSL | hsl(195, 59%, 46%) |
| OKLCH | oklch(63.9% 0.106 224.8) |
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 #3099BC | 3.27:1 | AA large text | Lc -65.2 | Content text, not long reading |
| Black text on #3099BC | 6.40:1 | AA | Lc 44.3 | Non-text elements, placeholder text |
| #3099BC text on white | 3.27:1 | AA large text | Lc 59.8 | Large or bold text, headings |
| #3099BC text on black | 6.40:1 | AA | Lc -42.0 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C6DEE8
oklch(88.6% 0.029 224.7)
-
Step 300
300
#9DC8DA
oklch(80.8% 0.052 225.4)
-
Step 400
400
#63ACC7
oklch(70.7% 0.083 224)
-
Step 500
500 (this color)
#3099BC
oklch(63.9% 0.106 224.8)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#05495D
oklch(37.8% 0.069 224.6)
-
Step 950
950
#092B36
oklch(27.1% 0.043 223.5)
#3099BC 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) | #8696BE | 0.082 |
| Deuteranopia (no green cones) | #7388BC | 0.072 |
| Tritanopia (no blue cones) | #00A3A4 | 0.056 |
| Achromatopsia (no color) | #8E8E8E | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3099BC
#3099BC
oklch(63.9% 0.106 224.8)
- #C17654
#C17654
oklch(63.9% 0.106 44.8)
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 #3099BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.048
- Faded Blue #658CBB ΔE 0.053
- Dusty Blue #5A86AD ΔE 0.057
- Cadet Blue #5F9EA0 ΔE 0.059
- Cool Blue #4984B8 ΔE 0.059
- Off Blue #5684AE ΔE 0.060
- Teal Green #0A9396 ΔE 0.062
- Steel Blue #4682B4 ΔE 0.064
Use #3099BC 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.